What are the the values of x and y that satisfy this equation?

( x + yi ) + ( 4 + 9i ) = 9 - 4i


A. x = 9 and y = -4

B. x = 5 and y = 13

C. x = 5 and y = -13

D. x = -9 and y = 4


Answer: C. x = 5 and y = -13


I hope this helps.