Which Goal Distinguishes Project Management and Portfolio Management

Multiple Choice

 Which goal distinguishes project management and portfolio management?

A) Project management involves making wise investment decisions whereas portfolio management does not.
B) Portfolio management is an easy task whereas project management is a more difficult task.
C) Portfolio management asks questions like, "Are we carrying out projects efficiently?" whereas project management asks questions such as "Are we investing in the right areas?"
D) Project management addresses specific, short-term goals whereas portfolio management focuses on long-term goals.