Directions: In the following question, two statements are given with some words in bold. Which of the following pairs of bold words must be interchanged to make both sentences grammatically correct?

a. It's hard to remorse(A) the suffering(B) of a man who caused so much murder(C) to so many people.

b. The psychopath appeared content(D) and showed no lament(E) during the harm(F) trial.