If x, y, and z are positive integers such that x is a factor of y and y is a factor of z, which of the following is NOT necessarily an integer?\nOptions:\n(A) (x + y) /z\n(B) (y + z) /x\n(C) yz/x\n(D) (2y + 3z) /x\n(E) (xy + z) /y Now, let's think a bit. Some random thoughts:
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As per the question, let x = 2, y = 6, and z = 12. Plugging these into the answer choices, only A does not yield an integer.
The final answer: (A).
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