Let h={(1). (12)} and k = {(1). (13)} be the subgroups of pemutation group s3. then hk= (a) {(1). (31), (12). (132)} (c){(1). (13), (21), (312)} (b) {(1). (13).

Let H={(1). (12)} and K = {(1). (13)} be the subgroups of pemutation group S3. Then HK= (a) {(1). (31), (12). (132)} (c){(1). (13), (21), (312)} (b) {(1). (13). (12), (123)} (d) {(), (13), (12), (132))