Assume that a is a $10-$bit signal with the std$-$logic$-$vector$(9$ downto $0)$ datatype. List the $10$ bits assigned to the a signal.$($a$)$ a $<=($others$=>$l$)$ ;

$($b$)$ a $<=(1131517/9=>1,$ others$=>$O$)$;

$($c$)$ a $<=(91712=>1,6=>0,$ O$=>$l$,11518=>0,314=>0)$;