Answer:
PART A: D. Life isn't always fair and sometimes good people are punished for no reason.
PART B: C. "the chains, the convicts, all the twenty-six years of his prison life, and his premature old age. The thought of it all made him so wretched that he was ready to kill himself." (Paragraph 50) Being sent to prison for a crime he didn't commit most affects Aksionov in D. He falls into a deep depression and is unable to find meaning in anything.
PART A: B. The narrator provides details that hint to Aksionov and the reader that Makar could be the one who framed him.
PART B: D. "He would have said no more, but his companions told the newcomers how Aksionov came to be in Siberia… and Aksionov had been unjustly condemned." (Paragraph 43)