Answer:
Option A. Take a loan from Big Bank at 10.0% and save the money in Bank Enn at 10.5%.
Step-by-step explanation:
Take a loan from Big Bank and deposit in Bank Enn. This activity can lead to a profit of 0.5% on the amount.
Assuming you take a Loan of $3000 from Big Bank at 10% interest rate. Present cash in hand is $3000 and the interest to be paid will be 10% of $3000 which is $300 every period.
If you deposit this amount with Bank Enn who pays an interest of 10.5%. You will receive $315 (10.5% of $3000) every period.
Doing this, you have a gain of $15 by the gap in the interest rates.