Can service company can use discounted cash flow model?

Managerial Accounting

Can a company that provides services use a discounted cash flow model for investment?

A) Yes: only if they are a large size service company
B) No: a service company cannot use these models to make capital investment decisions.
C) NO; not unless the future value of the investment is known
D) Yes: a service company can use these models to make capital investment decisions.