Which ones are the correct assembly code for this high level code?

a $=2$b $+16$

Variable aa is stored in register $t$0,$ and bb is stored in register $t$1.$

Choice $1$ of $5$:sll $t$1,$ $t$1,1$addi $t$0,$ $t$1,16$

Choice $2$ of $5$:addi $s$0,$ $zero, $16$sll $t$1,$ $t$1,1$add $t$0,$ $t$1,$ $s$0$

Choice $3$ of $5$:sll $t$1,$ $t$1,2$addi $t$0,$ $t$1,16$

Choice $4$ of $5$:addi $s$0,$ $zero, $2$mult $s$0,$ $t$1$mflo $s$0$addi $t$0,$ $s$0,16$

Choice $5$ of $5$:addi $s$0,$ $zero, $2$mult $s$0,$ $t$1$addi $t$0,$ $t$1,16$