Aidens Plumbing Company (APC) is bidding on a City of Winnipeg construction contract. The contract is for a 3-year period. The contract calls for the city to pay APC $6,000,000 at the start of the contract and $2,000,000 at the end of each of the 3 years of the contract. APC estimates that its expenses will be $5,000,000 at the end of each of the 3 years. If APC uses IRR to evaluate its project opportunities, it would only accept this contract if its required return for such projects is

a. <12.97800069%

b. <23.37519285%

c. < 25%

d. <33.333333%

e. >12.97800069%

f. >23.37519285%

g. >25%

h. >33.333333%

Answer is f. Please advise how to figure out this answer and any formulas required.