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
题目内容(请给出正确答案)
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.
