You are 20 years oid and Granny leaves yeu $70.000 in her wil she asks that you save and imvest a for your future. You invest it in atocks, which reburn 77 every year for 50 years. When you model this calculation up in excel, which combination of ingats will you use? a. PV 570,000 FV: 50 it TS N: 50 Pme 570,000 b. PV: $70,000 FV: 7 L TW N. 50 Pmit 50 c. PV 570,000 FV 5017 \% N 20 Pent 550