Determine the Values of a and B That Satisfy the Equation

Multiple Choice

Determine the values of a and b that satisfy the equation. $$8 - 7 i = ( a + 4 ) + ( b - 9 ) i$$

A) $a = 4 ; b = 2$
B) $a = 12 ; b = 16$
C) $a = 17 ; b = 11$
D) $a = 1 ; b = - 5$
E) $a = - 2 ; b = - 4$