1) The following C code performs an addition of some elements of one matrix (b) to elements of another matrix (a). C stores array elements by varying the last index first. That is, incrementing the last index steps through elements that are adjacent in memory. Both of the code segments produce the same results. Assume the processor has a data cache of 1K words with 4-way associativity and 4 words per set, and indices i and j are both allocated to registers. Also, assume the cache is "write-back". a. First code sample float a [8000] [8000] float b [8000] [8000]; for (int i = 0: i 8000; 1++) for (int j = 0; j