You are 20 years old and Granny leaves you $70,000 in her will. She asks that you save and invest it for your future. You invest it in stocks, which return 7% every year for 50 years. When you model this calculation up in excel, which combination of inputs will you use?

	a.	PV: $0 FV: $70,000 I: 7% N: 50 Pmt: $0
	b.	PV: $70,000 FV: $0 I: 7% N: 50 Pmt: $70,000
	c.	PV: $70,000 FV: ? I: 7% N: 50 Pmt: $0
	d.	PV: $70,000 FV: 50 I: 7% N: 20 Pmt: $50