$3\mathrm{.}1(7$ points$)$ Which variables exhibit temporal locality? $3\mathrm{.}2(7$ points$)$ Which variables exhibit spatial locality? Locality is affected by both the reference order and data layout. $3\mathrm{.}3(6$ points$)$ Would the program be slower or faster if the outer loop iterated over i and the inner loop iterated over j$?$ Why?