Cathy and her twin sister Carley both age 25 each belive they have the best savings plan. Cathy saved $5,000 as the end of each year for ten years,then let her money grow for 30 years. Carley on the other hadn waited 10 years then began saving $5,000 at the ned of each year for 30 years. They both earned 9% on their investement and are 65 years old today and ready to retire. Which of the followng statements is correct?

a. Both strategies are equal as they have equal account balances at age 65

b Cathy's strategy is better because she has a greater account balance at age 65.

c. carleys strategy is better because she has a greater account balance at age 65

d. neither strategy is better because carley has a greater account balance but Cathy contributed less

Please explain how to work this problem hopefully in excel