F: How can you be shouting at your grandpa? You can't be so rude! ,M: No, I don't want to be rude to him, but I had to shout so that he could hear me. My grandpa has something wrong with his ears. He doesn't hear well. ,F: I'm sorry. I misunderstood you. Your grandpa looks kind. ,M: Yes, he is kind to everybody in our small town. So we all respect him. ,F: He looks quite old now. He must be in his seventies, right? ,M: Yes, he is 75 years old this year.
(A) F: Oh, your grandpa is 65, so you two shouldn't have quarreled with each other. (B) F: No matter how bad you're feeling, you shouldn't have yelled at him. He's already 72. (C) F: I see. You were shouting at 70-year old grandpa, because he couldn't hear well. (D) F: I’m sorry, I don’t understand. Could you say it again?
D