单项选择题

A.x=-65,y=41,x -y的机器数溢出 
B.x=-33,y=65,x-y的机器数为FFFF FF9DH  
C.x=-33,y=65,x-y的机器数为FFFF FF9EH
D.x=-65,y=41,x-y的机器数为FFFF FF96H