9.5 SELF-REVIEW QUESTION Suppose that $to contains the starting address of an array of 3 words. The following MIPS program returns in $t1 the sum of all elements of the array. Write a complete program and test it in SPIM simulator. main: lw $t2, 0($t0) + loads the first component of the array to $t2 lw $t3, 4($t0) add $t1, $t2, $t3 # sum the first two components of the array lw $t2, 8($t0) add $t1, $t1, $t2 # sum the third component sw $t1, 12 ($t0) # store the results Using the trace table below, specify the registers and memory content after execution of the above instructions. Instruction Data register $t1 $t2 Memory 4($to) 8($t0) $to $t3 0($t0) 12 ($t0)