Choose the letter A, B, C or D to indicate the word(s) whose meaning is OPPOSITE to the UPPER-CASE word(s) in each of the following sentences

Choose the letter A, B, C or D to indicate the word(s) whose meaning is OPPOSITE to the UPPER-CASE word(s) in each of the following sentences.
 He was asked to ACCOUNT FOR his presence at the scene of crime.

A. complain
B. exchange
C. explain
D. arrange
I’ll take the new job whose salary is FANTASTIC.

A. reasonable
B. acceptable
C. pretty high
D. wonderful