Question 140
Tonček wrote out the third power of the expression $2 x^{3} y - 3 x y^{2}$. He found that in one of the terms the powers with bases $x$ and $y$ have equal exponents. What is the coefficient in this term?
(A) 36
(B) -36
(C) 18
(D) -54
(E) 54
(A) 36
(B) -36
(C) 18
(D) -54
(E) 54