Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 9 to 13.

a. Grace: It's fascinating how Ca Trù has been preserved for centuries. The performances are so rich in history and culture.
b. Alex: Absolutely. It's wonderful to see such a beautiful part of Vietnamese heritage being kept alive.
c. Grace: Have you ever heard of Ca Trù?
d. Grace: Exactly. I love how it combines vocal performances with traditional instruments like "đàn đáy" and “đàn nguyệt”.
e. Alex: Yes, I have! It's a traditional Vietnamese music genre known for its unique style and poetic lyrics.