If z = a - bi, which of the following must be true of the imaginary part of the complex conjugate of z?
AIt must be the opposite of -bi.
BIt must be the opposite of bi.
CIt must be the opposite of -b.
DIt must be the opposite of b
AIt must be the opposite of -bi.
BIt must be the opposite of bi.
CIt must be the opposite of -b.
DIt must be the opposite of b