Square (5) For each group listed below, decide whether the red members form a subgroup: (a) C7 = {0, 1, 2, 3, 4, 5, 6} (b) C10 = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} (c) C12 = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11} (d) D4 = {I, Rgo, R180, R270, H, V, D, D'} (e) DA = {I, R90, R180, R270, H, V, D, D'}