Computer Architecture

Assume that variables f,g,hij are assigned to registers $80 to $84 (in the given order). Assume that the base addresses of arrays A and B are in $s6 and $s7. Registers $t0 to $t2 are used to hold temporary values. What does this code do? (A is a label, assembler will replace this label with inbstruction addresses as needed in generating machine code) add $t0,$zero, $s addi $t0,$t0,400 A: lw $s7, O($t0) addi $87, $s7,1 sw $87,0(St1) subi $t0,$t0, 4 bne $t1 $50 A