Herman is 35 years old and wants to plan on having $2,500,000 for retirement at age 65. He currently has $15,000 saved for retirement and wants to know how much he needs to save per month to achieve his goal. Assume that his investments will earn an annual rate of 6%.

A. $6,944

B. $2,374

C. $2,489

D. $2,399

E. $30,533