A communication link uses stop$-$and$-$wait ARQ error control

protocol, the bit error rate $($BER$)$ is assumed to be BER$=10-12$ and

the frames are assumed to be $1000$ bits long.

The probability of receiving a frame in error is:

$($a$)10-10($b$)10-9$

$($c$)103($d$)10-3$