Given the following script, why does the output come out as an empty line instead of "dog"?()<br /> <img src="https://nimg.ppkao.com/2018-08/zhoulian/2018080213532885831.jpg?sign=765a0ad2326e0345447954d78e40f268&t=62d1db39" />
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