问题详情

Two numbers are reciprocalsif their product is equal to 1. If xand yare reciprocals and x>1, then y must be:
A.less than -1.
B.between 0 and -1.
C.equal to 0.
D.between 0 and 1.
E.greater than 1.请帮忙给出正确答案和分析，谢谢！