If j and k are integers and j^2 / k is odd, which of the following must be true ?	Choose the correct choice from the following answers:	A) j and k are both even	B) j = k	C) If j is even, k is even	D) j is divisible by k	E) j^2 > k
Given: j and k are integers and j^2/k=odd--&gt; j^2=k∗odd   (A) j and k are both even: not necessarily true, for example j=1 and k=1   (B) j = k: not necessarily true, for example j=3 and k=1;   (C) If j is even, k is even: as j^2=k∗odd then in order j to be even k must be even too, so this statement must be true;   (D) j is divisible by k: not necessarily true, for example j=3 and k=9;   (E) j^2 &gt; k: not necessarily true, for example j=1 and k=1.Answer: C.   Answer: If j is even, k is even.
<result>C</result>
If j and k are integers and j^2 / k is odd, which of the following must be true ?