If (G, .) is a group, such that (ab)2 = a2 b2 ∀ a, b ∈ G, then G is a/an

If (G, .) is a group, such that (ab)2 = a2 b2 ∀ a, b ∈ G, then

1.	If (G, .) is a group, such that (ab)2 = a2 b2 ∀ a, b ∈ G, then G is a/an
A.	abelian group
B.	non-abelian group
C.	commutative semi group
D.	none of these
Answer» B. non-abelian group