已知(SP)=40H,片内RAM(60H)=0FH,执行PUSH 60H和POP 50H两条指令后,SP及50H中内容各为 ( )

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问题 已知(SP)=40H,片内RAM(60H)=0FH,执行PUSH 60H和POP 50H两条指令后,SP及50H中内容各为    (  )

选项 A、(SP)=39H,(50H)=23H
B、(SP)=40H,(50H)=0FH
C、(SP)=41H,(50H)=0FH
D、(SP)=40H,(50H)=60H

答案B

解析
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