Translate the following C code to MIPS assembly code. Use a minimum number of instructions. Assume that the values of a, b, i, and j are in registers $s0, $s1, $t0, and $t1, respectively. Also, assume that register $s2 holds the base address of the array D.

for(i = 0; i < a; i ++)
for(j = 0; j < b; j ++)
D[4 * j] = i + j;