Sean: ----, Carol? Carol :I usually prefer healthy
food.

Sean :----?

Carol :Vegetable sandwich.

Sean :----?

Carol :Oh, it's easy. First, cut the bread from end to end. Then, put some vegetables and cheese between the slices.

Which question can NOT Sean ask Carol?

A) What do you prefer eating in the evenings

B) What's your favorite healthy food

C) How long does it take to make a sandwich

D) How do you prepare a vegetable sandwich ​