4. (10 pts) Consider an array a[0] to a[9] of 10 elements such that a[i] contains 7'. So a[0]=1, a[1]=7, a[2] = 49, etc. Let $a0 contain the base address of array "a". Write MIPS code fragments to perform the following operations: a) Put the value 200 in a[7], storing it in memory. b) Get a[9] from memory and put it in register $85. c) Add the contents of first 10 elements of the original array and put the result in $vl