Use of Certainty-Equivalent Cash Flows Is Advantageous in the Following

Use of certainty-equivalent cash flows is advantageous in the following ways:
I. there is no need to estimate future prices
II. there is no need to estimate the discount rate
III. there may be large errors introduced because prices in a competitive market fluctuate randomly

A) I only
B) II only
C) I and II only
D) I, II and III