Why is the ending of "charles" ironic?

a.
the narrator and readers are surprised when they find out that laurie is resposible for all of the bad things he said charles did.

b.
the narrator and readers are concerend when they learn that charles hurt other children in the class.

c.
the lighthearted tone of the story suddenly shifts as the narrator and readers are shocked by the truly terrible news given at the end of the story.

d.
the humor disappears as the narrator and readers learn that the kindergarten teacher is the mother of charles.

Which statement best describes how the first-person narration in fever 1793 engages readers? mattie's perspective on the city of philadelphia gives readers an understanding of why some residents are leaving for the country. mattie's perspective on the state of her family's business gives readers an understanding of the responsibility she feels. mattie's perspective on her grandfather's strong-headed opinions gives readers an understanding of the influence he has on her. mattie's perspective on the events of 1793 gives readers an understanding of the experiences and uneasiness of the time.