WAEC - English Language (1997 - No. 6)

In each of the following sentences, there is one word underlined and one gap. From the list of words lettered A - E, choose the word that is most nearly opposite in meaning to the underlined word and that will, at the same time, correctly fill the gap in the sentences.
Mary: '' I wonder why armed robbers are so hard-hearted'' John: '' The fact is that to be an armed robber you cannot be ..........''