Marcia Stubern is planning for her golden years. She will retire in 20 years, at which time she plans to begin withdrawing $50,000 annually. She is expected to live for 25 years following her retirement. Her financial advisor thinks she can earn 6% annually. a) How much does she need to have saved when she retires? 1250000 b) How much does she need to invest each year to prepare for her financial needs after her retirement?