Depending on the following Snapshot of a bash terminal, What is the output of the last command? ranas-mbp:- rana$ cat wc & [1] 1656 ranas-mbp-rana$ ps-f UID PID PPID C STIME TTY TIME CMD 284 1648 1649 0 2:58PM ttys000 0:00.04 -bash 284 1655 1648 0 3:09PM ttys000 0:00.01 cat 284 1656 1648 0 3:09PM ttys000 0:00.01 wc ranas-mbp:- ranas echo $$ O1648 O284 01649 01656