Compute$$dy$/$dx for$=(32)2/32$

Select one:

a$.$

$2(32)(61)/(32)2$

b$.$

$2(32)(61)(32)2/(32)2(32)2$

c$.$

$2(3^2)(3^2)+2(3^2)2/(3^2)$

d$.$

$2(3^2)(61)(32^)+2(3^2)^2/(3^2)^2$