Which is the correct option for internal direct product?
1
If G = G1 × G2 then G is an internal direct product of two normal subgroups G1 and G2 and Each element of the group G can be uniquely expressed as the product of an element in G1 and an element in G2
2
H1 ⊂ H2
3
S3 × Z4
4
K4 × Z3