Suppose Big Bank offers an interest rate of 7.5% on both savings and loans, and Bank Enn offers an interest rate of 8.0% on both savings and loans. a. What profit opportunity is available? a. What profit opportunity is available? A. Take a loan from Bank Enn at 8.0% and save the money in Big Bank at 7.5%. B. Take a loan from Big Bank at 7.5% and save the money in Bank Enn at 8.0%. C. Take a loan from Big Bank at 8.0% and save the money in Big Bank at 7.5%. D. Save at both banks