4、假设有一个抛硬币的赌局,若出现正面你将赢得10元,若出现反面你将输掉5元,则这个赌局可以编码成(     )

A (10,0.5)

B (-5,0.5)

C (10,0.5;5,0.5)

D (10,0.5;-5,0.5)