假設經濟體系中有兩位消費者(A 和B),兩種財貨(X 和Y)。消費者A 的初始稟賦為(X =30, Y = 20)而消費者B 的初始稟賦為(X = 20, Y = 30)。消費者A 的效用函數為U(X,Y) = XY,而消費者B 的效用函數則為U(X,Y) = X + Y。下列何種資源配置滿足柏瑞圖最適(Paretoefficiency)的定義?
(A)A(X = 30, Y = 20),B(X = 20, Y = 30)
(B)A(X = 20, Y = 30),B(X = 30, Y = 20)
(C)A(X = 15, Y = 25),B(X = 35, Y = 25)
(D)A(X = 10, Y = 10),B(X = 40, Y = 40)