Consider the following while loop.

$1$ while $(($a $>2)($b $>2))$

$2$ a $$ a$-2$

$3$ b $$ b$+3$

Which of the following expressions for E have the property that En$+1<=$ En $-1?($That is$,$ E decreases by at least $1$ in every iteration of the loop.$)$ Select all that apply