If you won $10,000,000 in a Lottery and you have the following options:

Option A: taking the entire ten million dollars in one lump sum today

Option B: receiving $500,000 at the end of the year for each of the next 20 years.

If the annual interest rate is 6%, what is the present value (today's amount) that you won if you choose to receive $500,000 at the end of the year for the next 20 years? (Ignore taxes.)

Which would be the best option?

Please include calculations to for EACH of the options.