Pleas help. I'm between B and D.

What MIPS instruction does this represent? Choose from one of the four options. op . rs . rt T rd shamt funct 0 T8 T9 T10 TOT 32 O a. sub $to, $t1, $t2 O b.add $t2, $t0, $t1 O C. sub $t2, $t1, $t2 d. sub $t2, $t0, $t1