Box $ml$ is pressed into box $m2$ which is pressed against a stationary wall, as shown to the right. Both boxes experience friction. The arrow is an outside force pushing against $m1.$

While this is going on$,m2$ is slipping down the wall and $m1$ is moving up relative to $m2,$ but down relative to the wall.

What is the direction of the friction force on $m1?$

$($a$)$ down

$($b$)$ left

$($c$)$ right

$($d$)$ up

$($e$)$ there is no friction on $m1$

HELP ASAP PLS $.$