正确答案：BC
解析：
Malcolm will not always be generous and likely to forgive others their faults ("unbounded magnanimity"), especially to those who misbehave ("actions clearly...", the 'nonetheless' shows us that he is otherwise kinder than his predecessor.

(B) and (C) both means fair. While being fair is not quite the same as being kind, it still fits in the sentence. Also, the other words are negative, and falsely imply that people had an easier time under Malcolm's predecessor.