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.
He was very powerful. Nevertheless, he failed to do anything to save his son's life.
A. Powerful as he might be, he could do nothing to save his son’s life.
B. He failed to do anything to save his son’s life in spite of the fact that he had no power.
C. In order to save his son’s life, he had great power to do anything he could.
D. The failure in saving his son’s life was due to his being very powerful.