For the Next 20 Years, You Plan to Invest $600

For the next 20 years, you plan to invest $600 a month in a stock account earning 7 percent and $400 a month in a bond account earning 4 percent. When you retire in 20 years, you will combine your money into an account with a return of 5 percent. How much can you withdraw each month during retirement assuming a 30-year withdrawal period? 

A) $2,636.19 
B) $2,904.11 
C) $3,008.21 
D) $2,465.44 
E) $3,206.97