The number 4096 appears in computer memory calculations. Answer the following:
a. (i) Express 4096 as a power of 2.
b. (ii) Express 4096 as a power of 4.
c. (iii) Express 4096 as a power of 8.
d. (iv) Compare the three exponents obtained above and state which base gives the smallest exponent. Explain your answer briefly.