We have learned in the class (see lecture 18) that using the barrel shifter, we can implement multiplication/division of a number for some special cases with addition, subtraction, and reversed subtraction. Write the assembly code to perform the following calculations using this approach assuming signed integers A and B are saved in r0 and r1, respectively.

a. A = 16 * B

b. A = 17 * B

c. A = 15 * B

d. A = B / 16

e. A = 17 * B / 16

f. A = 15 * B / 16