Answer:
A) borrowers gain at the expense of lenders.
Step-by-step explanation:
The real interest rate that lenders earn = nominal interest rate - inflation rate. If the inflation rate increases, the real interest rate earned decreases.
The real interest rate that borrowers pay is also = nominal interest rate - inflation rate. If the inflation rate increases, the real interest rate paid decreases.
So, any increase in the inflation rate favors borrowers and hurts lenders.