Solve the application problem. Round to the nearest cent. 4 pts Gretta wants to retire in 13 years. At that time she wants to be able to withdraw $12,500 at the end of each 6 months for 3 years. Assume that money can be deposited at 5% per year compounded semiannually. What exact amount will Gretta need in 13 years? O $79,367 38 O $931.148.37 $58,072.88 O $68,851.63