Which of the Following Statements Is Correct

Which of the following statements is correct?

A) For a given real interest rate, the nominal interest must decrease if expected inflation increases.
B) For a given nominal interest rate, the real interest will decrease if inflation decreases.
C) For a given expected inflation rate, the nominal interest must increase if real interest decreases.
D) For a given real interest rate, the nominal interest must increase if expected inflation increases.