At the initial prices， Teodoro is a net seller of apples and a net buyer of bananas.If the price of apples decreases and the price of bananas does not chang

At the initial prices， Teodoro is a net seller of apples and a net buyer of bananas.If the price of apples decreases and the price of bananas does not chang
E.
A.the compensating variation must be negative and the equivalent variation positive.
B.the compensating variation must be positive and the equivalent variation negative.
C.both the compensating variation and the equivalent variation must be positive.
D.both the compensating variation and the equivalent variation must be negative.
正确答案：both the compensating variation and the equivalent variation must be positive.