This is a high level, C programming language for loop that is accessing all the $100$ elements of an integer array named A:

for$($i $=0$; i $<100$; i$++)\{$

sum$+=$A$[$i$]$;

$\}$

This is a low level MIPS assembly language program that works similarly to the for loop that is accessing all the $100$ elements of the integer array named A:

and $t$0,$ $t$0,$ $zero

addi $t$1,$ $zero, $100$

LOOP: lw $t$3,0($$s$0)$

add $t$4,$ $t$0,$ $t$3$

addi $s$0,$ $s$0,4$

addi $t$0,$ $t$0,1$

bne $t$1,$ $t$0,$ LOOP

Given these facts, please answer the following questions.

a$)$ Which register is being used to store the equivalent of the for loop's i variable? $(4$ points$)$

b$)$ List the assembly language instruction or instructions that correspond to the high level language part of the for loop that states

i $<100$;

$(5$ points$)$

c$)$ List the assembly language instruction or instructions that correspond to the high level language part of the for loop that states

i$++$

$(3$ points$)$

d$)$ Assume the register $s$0$ contains the base address of the array A$.$ List the assembly language instructions that correspond to the high level language statement

sum$+=$A$[$i$]$;

$(5$ points$)$