The Difference Between the Commands Ps -E and Ps -A

Multiple Choice

The difference between the commands ps -e and ps -a is

A) ps -e gives details of every process running in memory whereas ps -a gives output for all the process that you have launched
B) ps -e gives details of every process running in memory whereas ps -a gives details of all user processes
C) no difference , both give same output
D) none of the above