What discount rate would you use to calculate the present value of these contracts? Explain how you decided on the discount rate

A: $1,000,000 signing bonus, $1,000,000 year one salary, $1,100,000 year two salary, $1,200,000 year three salary.

B: $800,000 signing bonus, $900,000 year one salary, $1,000,000 year two salary, $1,100,000 year three salary, $1,200,000 year four salary.