Need help with this finance question. How should you use depreciation when calculating incremental cash flows ?

Need help with this finance question.

How should you use depreciation when calculating incremental cash flows?

A. Subtract depreciation, calculate taxes off of that number, and then add back depreciation.

B. Subtract depreciation because it is an expense.

C. Subtract taxes as though depreciation were not tax-deductible. Then subtract depreciation.

D. Do not subtract depreciation, and then subtract taxes on operating income before depreciation.