A rational person would prefer which of the following cash flows.

a. $5,000 per year for 10 years with the first payment made one year from today

b. $5,000 per year for 10 years with the first payment made today

c. $50,000 paid today

d. $25,000 paid today and $25,000 paid next year

e. $49,000 paid today

enter a, b, c, d or e

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