Answer is A.
Question stem says (n-1), n and (n+1) are consecutive positive integers. Hence, one of them is a multiple of 3
Stat1: alone is sufficient
(n-1) is even implies that (n-1) is a multiple of 2 or 4
if (n-1) is multiple of 2, then (n+1) is a multiple of 4
if (n-1) is multiple of 4, then (n+1) is a multiple of 2
There is a multiple of 2 and a multiple of 4 in the set {(n-1) ; (n+1)}
as per question stem, There is a multiple of 3 in the set {(n-1) ; n ; (n+1)}
Therefore, (n-1)*n *(n+1) is multiple of 2*4*3 = 24
Stat2 is not sufficient
n=3 gives YES answer
n=6 gives NO answer
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