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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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