Rewrite the fractions with their LCD.

(1)/(3x-9y),(6)/(5x-15y)

A.
2/8x-21y and 2/8x-21y

B.
5(x-3y)/15(x-3y) and 18(x-3y)/15(x-3y)^2

C.
5/15(x-3y) and 18/15(x-3y)

D.
5/15x-135y and 18/15x-135y