The correct statement is:

1. Inflation benefits the debtors.

Inflation erodes the value of money over time, which means that debtors can repay their debts with money that has a lower real value. This can be advantageous for debtors as they effectively pay back less in real terms. On the other hand, inflation is generally unfavorable for bond-holders, as the fixed interest payments they receive become worth less in real terms. So, statement 2 is incorrect.