(3) After executing the following MIPS ASM codes, what is the final result for $t1?
Assume initially $t1 contains value 7<sub>10</sub>, $t2 contains value 3<sub>10</sub>, $t3 contains value 2<sub>10</sub>.
move $t1, $t2
sll $t2, $t3, 4
srl $t1,$t1, 2
sub $t1, $t2, $t1
A. 31<sub>10</sub>
C. 20<sub>hex</sub>
B. 7<sub>10</sub>
D. None of the above