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

C. x = 5 and y = -13

I hope this helps.

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