Diana invested $2,380 for 326 days at a simple interest rate of 3.50% per annum. How much more or less interest would she have earned on the investment if her money was growing at a simple interest rate of 4.00% per annum instead of 3.50% per annum? Round to the nearest cent. a. $11.78 b. $12.89 c. $10.63 d. $5.96