Your firm needs to borrow $500,000 for one year. Your banker offers the following four loan options. Obviously, you'll want the best (lowest) effective rate you can get.Which one will you choose? Select one: O a. 12.0% simple interest O b. 11% discount interest O c. 11% simple interest with a 15% compensating balance d. 9.25% discount interest with a 12% compensating balance e. Can't tell without knowing the firm's tax rate