Simplify the rational expression and state the non permissible values. (3xy)³ 3 Select one: a. None of these. b. c. 3x³y³, x0, y*0 O d. 9x³y³, x0, y*0 e. 3x³y³, no restrictions on x or y Clear my choice 9x³y³, no restrictions on x or y