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If \(x\) and \(y\) are different prime numbers, each greater than \(2,\) which of the following must be true?
I. \(x + y \ne 91\)
II. \(x - y\) is an even integer
III. \(\dfrac{x}{y}\) is not an integer
(A) II only
(B) I and II only
(C) I and III only
(D) II and III only
(E) I, II, and III
Answer: E
Source: Official Guide
I. \(x + y \ne 91\)
II. \(x - y\) is an even integer
III. \(\dfrac{x}{y}\) is not an integer
(A) II only
(B) I and II only
(C) I and III only
(D) II and III only
(E) I, II, and III
Answer: E
Source: Official Guide