Doris Wade purchased a condominium for $45,000 in 1981. Her down payment was $16,000. She financed the remaining amount as a $29,000, 35-year mortgage at 8%, compounded monthly. Her monthly payments are S220, it is now 2001 (20 years later) and Doris has sold the condominium for $110,000, immediately after making her 240th payment on the unit. Find her effective annual internal rate of return on this investment. Choose the closest answer below OA. B. . D. 6.1% 3.9% 9% 1.9%