If you are going to retire in 40 years and want to have $1,000,000, how much do you have to save per month for the next 40 years if you can earn a 6% annual return, compounded monthly?

A $6,461.04

B. $2,833.33

C. $1,076.92

D. $1,004.27

E. $502.14

and If you save $250 per month for the first 5 years how much do you have to save per month in the last 35 years to reach your $1,000,000 goal?