B$.$ How efficient would a $6-$bit code be in asynchronous transmission if it had $1$ parity bit, $1$ start bit, and $2$ stop bits? $($Some old equipment uses $2$ stop bits.$)$

C$.$ What is the transmission rate of information bits $($TRIB$)$ if you use ASCII $(8$ bits plus $1$ parity bit$),$ a $1,000-$character frame, $56Kbps$ modem transmission speed, $20$ control characters per frame, an error rate of $1\%,$ and a $30-$millisecond turnaround time? What is the TRIB if you add a half$-$second delay to the turnaround time because of satellite delay?