Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines the pair of sentences given in each of the following questions.
He was suspected of having stolen credit cards. The police have investigated him for days.
A. Suspected of having stolen credit cards, he has been investigated for days
B. Suspecting of having stolen credit cards, he has been investigated for days
C. He has been investigated for days, suspecting of having stolen credit cards
D. Having suspected of having stolen credit cards, he has been investigated for days