执行MOV AX ,WDAT 指令,要使AX寄存器中内存为3412H,不能采用下列

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问题:

执行MOV AX ,WDAT 指令,要使AX寄存器中内存为3412H,不能采用下列哪种数据定义?
A) DSEG SEGMENT
   WDAT EQU WORD PTR BDAT
   BDAT DB  12H,34H
   DSEG ENDS
B) DESG SEGMENT
   BDAT DB 12H,34H
   WDAT = WORD PTR BDAT
   DSEG   ENDS
C) DESG SEGMENT
   WDAT EQU THIS WORD
   BDAT DB 12H,34H
   DSEG ENDS
D) DESG SEGMENT
   BDAT DB 12H,34H
   WDAT LABEL WORD
   DESG EBDS

考点:计算机等级考试PC技术三级PC技术笔试
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