On the Internet You Find the Following Offers for Opening

On the Internet you find the following offers for opening an online account.Which of them is the best offer if you have $2,000 to save for two years?

A) an interest rate of 5 percent,with the bank charging you a $15 processing fee at the time you open your account
B) an interest rate of 3.5 percent,with the bank giving you a $35 bonus to open your account
C) an interest rate of 4 percent,with the bank giving you a $20 bonus at the time you open your account
D) an interest rate of 4.5 percent,with no processing fee and no bonus