20. A: Could you repeat that answer again please?
B: Yes. The correct answer is “B”.
A: Did you say “B” or “D”?
B: ________
(A) “B” as in “Boy”. (B) “B” and “D” look similar.
(C) What I said sounded like “T”. (D) What did you see?
(E) Do you have any smelling problem?