Consider a cache with $64-$blocks and a block size of $16$ bytes. To what block number does byte address $1200$ map $?$

$($a$)21$

$($b$)41$

Block Number $=$ Byle Address

$($c$)11$

$($d$)61$

$=>\frac{1200}{16}\%64$

$=75\%64$