F: Ralph already knows how to unlock his seat belt and our ice box. ,M: He's a really smart one year old. Phillip didn't start any of that until at least 3 years old. That's when I started losing my hair. ,F: Phillips' tenth birthday will be next week.
(A) M: Ralph is big boy now. I have to admit he can learn quickly. He is really smart. (B) M: Are you sure that Ralph is three years old. Philip will be 8 years old next week. (C) M: Ralph is a quick learner. Philip also can learn many things quickly before 3 years old. (D) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please?
A