18. Consider the following code: Assume $16 has a valid RAM address addi $8, $0,5 sw $8, 41516) addi $16, $16,4 w $9. 01$16) After executing the above code in sequence, which value will be in $9? a. 5 b. 16+4 -20 c $16+4 19. Consider the following code: Assume $16 has the starting address of the array A lw $8, 0($16) sw $8, 4($16) Which of the following lava code describes the above MIPS code a. Al8] A[16 b. A0] A[1]