If s and t are positive integers, and 3 is not a factor of t, then t may be which of the following?
Choose the correct choice from the following options:
A) (s−1)·s·(s+1)  B) (s−3)·(s−1)·(s+1)  C) (s−2)·s·(s+2)  D) (s−1)·s·(s+2)  E) (s−3)·(s+1)·(s+2)
Plugged in values :   let s=5   A. (s−1)·s·(s+1) --&gt; divisible by 3   B. (s−3)·(s−1)·(s+1) --&gt; divisible by 3   C. (s−2)·s·(s+2) --&gt; divisible by 3   D. (s−1)·s·(s+2) --&gt; not divisible. Hence the answer.
<result>D</result>
If s and t are positive integers, and 3 is not a factor of t, then t may be which of the following?