Teacher:In this task, you will be shown a conversation. You need to write a question with three choices for the conversation. Your question should be answerable based on the conversation and only have one correct answer. Note that you don't need to answer your question. "W" and "M" in the conversations stand for "woman" and "man".
Teacher: Now, understand the problem? Solve this instance: M: I'll have these shoes. Please tell me how much I owe you. W: They are 40 dollars a pair, and 3 pairs make a total of 120 dollars. But today we offer a 10% discount.
Student:
How much does the man have to pay? (A) $120 (B) $108 (C) $90