A relative just won the lottery. They were given 3 options for receiving the money as follows:

Option A: Receive $10,000,000 today

Option B: Receive $15,000,000 in 5 years

Option C: Receive $2,500,000 per year for 5 years

1a. Assuming a rate of 5%, which option should be selected? Support your answer with calculations.

1b. Assuming an interest rate of 10%, how long will it take an investor to double their money?