Depending on the following snapshot of a unix terminal What is the output of the last command? Tanas-mbps-tanas var=50 ranas mbp-ana$ export var ranas-mbprana$ bash bash-3.25 var=1 bash-3.2$ bash bash-3.2$ var=15 bash-3.2$ exit exit bash-3.25 echo Svar 0 50 15