2. The following MIPS assembly code contains a mistake that violates the MIPS convention in terms of using stack for storing/protecting registers. - What is the mistake and how should it be fixed? Correct the corresponding lines in the code. f: For the corrected code, sketch the stack frame contents at the time when the instruction 'move $s1, $a1' is being executed. addi $sp, $sp, 12 SW $ra, 8($sp) SW $s1, 4($sp) SW $50, 0($sp) move $50, $a0 move $s1, $a1 jal g # Stack frame? add $v0, $v0, $50 lw $ra, 8($sp) lw $s1, 4($sp) lw $50, 0($sp) jr addi $sp, $sp, -12 $ra g: mul $v0, $50, $s1 jr $ra