Depending on the following snapshot of a unix terminal, What is the output of the last command? ranas-mbp-ranas var 35 ranas-mbp-rana$ export var ranas-mbp:- rana$ bash bash-3.2$ var-3 bash-3.2$ bash bash-3.2$ var-20 bash-3.2$ exit exit bash-3.2$ echo $var 00 O3 035 20