I need help with the first four lines of this code. The last three are correct. Options include lw, jal, sw, j, addi, mul, and jr.

CHALLENGE ACTIVITY 3.1.1: Call and create subroutines. Jump to level 1 Data memory 5000 15 50040 Pass DM[$t2] to the Weekly Salary subroutine, and store the return value to DM[$t3]. Sto is the subroutine argument. $t1 is the subroutine return value. lw $t0 , 0 Sto ) Registers Sto 0 lw $to , 0(Stor) 51 | 0 lw $t0 , 0(Stor) $125000 lw $t0 , 0(Sto ) $t3 5004 Weeklysalary: addi $t1 Szero 40 mul 7 $t1 ,$to , $t17 jr Sra Done