【单选题】

One Friday morning Mike gets up late. When he gets to the door of the classroom, Mr. Green, his math teacher, says, "You are late again. Now how many times are you late this week "

"Three times," says Mike.
"Why are you late for class "
"Because I get up late."
"Why don’t you go to bed early " asks the teacher.
"It isn’t my fault, Mr. Green. The TV play is over at about eleven." says Mike.
"Now please give me your homework." says the teacher.
"I’m sorry, I can’t do it." says Mike.
"But why can’t you do it " asks the teacher.
"Because the first part of the homework is too easy. I don’t think I need to do it. The second part is not easy. I can’t work it out. So I can’t do it," says Mike again.
Mike doesn’t do his homework because he doesn’t know how to do it.
[A] True. [B] False.