Select the correct answer from the choices given.
(13 + 4i) n = 0 what is n?
a. 0
b. 1
c. –13 + 4i
d. –13 - 4i
(9 – 6i) × m = 9 – 6i what is m?
a. 0
b. 1
c. 9 + 6i
d. -9 + 6i