You can choose between the following rent payments: a. A lump sum cash payment of $100,000; b. 10 annual payments of $12,000 each, the first occurring Immediately At what interest rate would you be indifferent between the first and the second choice above? Exact, and approximate solutions are both fine. (Hint: Graph the NPV of the second project as a function of the interest rate.) Select one: O a. 6.45% O b. 8.45% O c. 7.45% O d. 9.45% Give your reasons