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 questionThe old man is working in this factory. I borrowed his bicycle yesterday.
A. The old man whom is working in this factory, I borrowed his bicycle yesterday.
B. The old man whom I borrowed his bicycle yesterday is working in this factory.
C. The old man whose bicycle I borrowed yesterday is working in this factory.
D. The old man is working in this factory which I borrowed his bicycle yesterday.