Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
I whispered as I didn't want anybody to hear our conversation.
A.Since nobody wanted to hear our conversation, I whispered.
B.So as not to hear our conversation, I whispered.
C.Because I whispered, anybody heard our conversation.
D.I lowered my voice in order that our conversation couldn't be heard.