A term deposit scheme offers 6.5% annual interest compounded yearly and payable at maturity over 55 years, for a deposit of $500,000 or above. After 22 years, the depositor may at any time withdraw the deposit before maturity but will forego half of the gain. Mr. Lucky invested $1 million in the scheme and withdrew his deposit after 33 years. What were Mr. Lucky's net gain and the percentage of annual interest he benefited from the scheme?

Net gain of $207,950 at an annual interest of 3.9%

Net gain of $69,317 at an annual interest of 2.26%

Net gain of $103,975 at an annual rate of 3.35%

Net gain of $207,950 at an annual rate of 6.5%