【单选题】Identify the topic sentence from the following paragraph. The student often came late to class without his materials. He did not always concentrate on what the teacher was saying or write down the hom...
A.
The student often came late to class without his materials.
B.
He did not always concentrate on what the teacher was saying or write down the homework that he had to do.
C.
He did not study long or effectively enough for his vocabulary and grammar tests.
D.
Furthermore, he did not ask for help if there was something that he did not understand.
E.
It is no surprise therefore that he failed the course and was asked to leave the school.