Depending on the following Snapshot of a bash terminal, What is the output of the last command? ranas-mbps- rana$ cat wc & [1] 1640 ranas-mbp:- rana$ ps -f UID PID PPID C STIME TIME CMD 286 1632 1633 0 2:58PM ttys000 0:00.04 -bash 286 1639 1632 0 3:09PM ttys000 0:00.01 cat 286 1640 1632 3:09PM ttys000 0:00.01 WC ranas-mbp:- rana$ echo $$ 1633 1640 1632 286