Which excerpt from "everyday use" by alice walker employs the technique of ambiguity?
a) in both of [the quilts] were scraps of dresses grandma dee had worn fifty and more years ago. bits and pieces of grandpa jarrell's paisley shirts. and one teeny faded blue piece, about the size of a penny matchbox, that was from great grandpa ezra's uniform that he wore in the civil war.

b) and then she turned to maggie, kissed her, and said, “you ought to try to make something of yourself, too, maggie. it's really a new day for us. but from the way you and mama still live you'd never know it."

c) you've no doubt seen those tv shows where the child who has 'made it' is confronted, as a surprise, by her own mother and father, tottering in weakly from backstage. (a pleasant surprise, of course: what would they do if parent and child came on stage only to curse out and insult each other? )

d) dee wanted nice things. a yellow organdy dress to wear to her graduation from high school; black pumps to match a green suit she'd made from an old suit somebody gave me. she was determined to stare down any disaster in her efforts. nextreset

He leaned his head against the wall; his eyes were shut, his hands clasped in each other, and his body seemed to be sustained in an upright position merely by the cellar-door against which he rested his left shoulder. the lethargy into which he was sunk seemed scarcely interrupted by my feeling his hand and his forehead. his throbbing temples and burning skin indicated a fever . . there was only one circumstance that hindered me from forming an immediate determination in what manner this person should be treated. my family consisted of my wife and a young child. our servant-maid had been seized, three days before, by the reigning malady, and, at her own request, had been conveyed to the hospital. we ourselves enjoyed good health, and were hopeful of escaping with our lives. our measures for this end had been cautiously taken and carefully adhered to. they did not consist in avoiding the receptacles of infection, for my office required me to go daily into the midst of them; nor in filling the house with the exhalations of gunpowder, vinegar, or tar. they consisted in cleanliness, reasonable exercise, and wholesome diet. who is the story’s first-person narrator