Mark the letter A, B,...

Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines of each pair of sentences in the following questions.
The student next to me kept chewing gum. That bothered me a lot.

A. The student next to me kept chewing gum, which bothered me a lot.

B. The student next to me kept chewing gum, that bothered me a lot.

C. The student next to me kept chewing gum bothering me a lot.

D. The student next to me kept chewing gum bothered me a lot.