Whitney deposits $9,000 for two years. She compares two different banks. State Bank will pay her 4.1%

Question:

Whitney deposits $9,000 for two years. She compares two different banks. State Bank will pay her 4.1% interest, compounded monthly. Kings Savings will pay her 4.01% interest, compounded continuously.
a. How much interest does State Bank pay?
b. How much interest does Kings Savings pay?
c. Which bank pays higher interest? How much higher?
d. What other factors might affect Whitney's choice besides interest?