题目内容
(请给出正确答案)
[单选题]
若(AX)=0122H,4个标志位CF、SF、ZF、OF的初始状态为0,执行指令SUB AX,0FFFH后,这4个标志位的状态是______。
A.(F)=0,(SF)=0,(ZF)=0,(OF)=0
B.(F)=1,(SF)=1,(ZF)=0,(OF)=0
C.(F)=0,(SF)=0,(ZF)=1,(OF)=1
D.(F)=1,(SF)=1,(ZF)=1,(0F)=1
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