If 0 < y< 1 < z, which of the following must be true?
Choices:	A) 1 < 1/y < 1/z	B) 1/y< 1 < 1/z	C) 1/y< 1/z< 1	D) 1/z< 1 < 1/y	E) 1/z< 1/y< 1
0&lt;y&lt;1&lt;z. Let y=1/2 and z=2   Substituting values:   A. 1&lt;2&lt;1/2 ---Wrong   B. 2&lt;1&lt; 1/2 ---Wrong   C. 2&lt;1/2&lt;1 ---Wrong   D. 1/2&lt;1&lt;2 ---Correct   E. 1/2&lt;2&lt;1 ---Wrong   Hence answer is 1/z&lt; 1 &lt; 1/y
<result>D</result>
If 0 < y< 1 < z, which of the following must be true?