根据对话内容判断正误。

A: Hello! Grandpa Goat!

B: Hello, my friend. I'm not a grandpa. I'm only two years old.

A: Oh, I'm sorry. Why do you have a beard?

B: Look! All goats have beards.

A: They are Bob, Nancy and Jerry. They are all three years old.

B: Oh, how interesting! Nice meeting you all!

A: Hello. Little Turtle! Let's have a race.

C: Oh, no. I'm not a little turtle. I'm a very old turtle. I'm 40 years old.