Jeremy opened two saving accounts at the beginning of 2010, each with an initial deposit of $4,000. Account A earned simple interest, and account B earned interest that was compounded annually. By the end of 2012, which account earned more interest, and how much more interest did it earn?

A. Account A; $12.03
B. Account A; $47.25
C. Account B; $12.03
D. Account B; $47.25

And your answer is?

To determine which account earned more interest, we need to calculate the interest earned by each account and compare the amounts.

For Account A, since it earned simple interest, we can use the formula:

Interest = Principal * Rate * Time.

The principal is $4,000, and the rate of interest hasn't been provided in the question. Therefore, we need additional information to calculate the interest earned by Account A.

For Account B, the interest is compounded annually, which means the interest is added to the account balance at the end of each year. The formula to calculate the compound interest is:

Compound Interest = Principal * (1 + Rate)^Time - Principal.

Again, the rate of interest hasn't been provided, so we cannot calculate the exact interest earned by Account B.

Without the necessary information, it is not possible to determine which account earned more interest or calculate the exact amount of interest. Therefore, the correct answer is: None of the options provided (E).