Option 2 please.

Your goal is to have $1,000,000 in 20 years in an investment account that is available for you to withdraw starting 21st year. To that end, you are evaluating multiple options. Which option would you prefer and why? For this problem assume that you have required cash on hand at the present time for investment Option #1: Put aside lump sum today, at 8% interest compounded annually. Option #2: Invest a specific amount over time (over the next 18 years) at 10% compounded annually