Let g be a group of order 56. then, all 7-sylow subgroups of g are normal all 2-sylow subgroups of g are normal either a 7-sylow subgroup or a 2-sylow subgroup

Let G be a group of order 56. Then, all 7-Sylow Subgroups of G are normal all 2-Sylow Subgroups of G are normal Either a 7-Sylow Subgroup or a 2-Sylow Subgroup of G is normal 9. (A) (B) (C) (D) There is proper normal Subgroup of G