$5\mathrm{.}2\mathrm{.}3[20]<5\mathrm{.}3,5\mathrm{.}4>$ You are asked to optimize a cache design for the given references. Th ere are three direct$-$mapped cache designs possible, all with a total of $8$ words of data: C$1$ has $1-$word blocks, C$2$ has $2-$word blocks, and C$3$ has $4-$word blocks. In terms of miss rate, which cache design is the best? If the miss stall time is $25$ cycles, and C$1$ has an access time of $2$ cycles, C$2$ takes $3$ cycles, and C$3$ takes $5$ cycles, which is the best cache design? Th ere are many diff erent design parameters that are important to a cache$$s overall performance. Below are listed parameters for diff erent direct$-$mapped cache designs. Cache Data Size: $32$ KiB Cache Block Size: $2$ words Cache Access Time: $1$ cycle