Which of the following sentences requires a colon to be correct? a. in his vacation suitcase, jonathan packed two pairs of pants, four shirts, his swimsuit, and his favorite pajamas. b. she gathered all of her ingredients to make a smoothie strawberries, blueberries, bananas, and yogurt. c. the new dessert recipe called for equal parts of sugar, cream, peanut butter, and crushed pecans. d. when she decided to write a letter, she grabbed her pen, paper, stamps, and address book.