What is the quotient of the rational expression below
(x^2-36 divided by x+8) divided by (x^2+12x+36 divided by 4x+32)

A) 4(x+6) divided by (x-6)
B) 4x-6 divided by x+6
C) 4x-6 divided by (x+6)^2
D) 4(x-6) divided by x+6