Corp. Finance: Inflation and Capital Budgeting savings, everything, expected, affect, interest

noel

"How would a higher than expected inflation rate affect the value of the real tax savings from depreciation and the value of the real after-tax interest expense, everything else held constant?"

A. real tax savings from depreciation and real interest expense would be lower.
B. real tax savings from depreciation would be higher and real interest expense would be lower.
C. real tax savings from depreciation would be lower and real interest expense would be higher.

I answered A, but I don't know why the answer is B.