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【单选题】
Given the following script， why does the output come out as an empty line instead of "dog"（）#!/bin/ksh $VAR=dog echo "${VAR}"A.
The $VAR variable was not exported.
B.
The $VAR should have been set as VAR.
C.
dog needs double quotes around it when setting $VAR.
D.
The { } should not be around VAR in the echo command.
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举一反三
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