LeShawn is arranging a display of shirts at a department store. He wants to dress two mannequins in different-colored shirts. The shirts come in Black, Green, Purple, and Yellow. Which list shows all possible combinations of two different shirt colors? O A. BG, BY, GP, GB, PY, PG, YG, YP

O B. BG, GP, PY, YB

O C. BG, BP, BY, GP, GY, PY

O D. BB, BG, BP, BY, GG, GP, GY, PP, PY, YY