What is the reason for this?

You need to configure sales phases during fine-tuning, but the activity is in read-only mode .

What is the reason for this?
A . The fine-tuning activity is NOT assigned to the user.
B . The fine-tuning activity is NOT added to the project.
C . The fine-tuning activity is NOT open for configuration.
D . The fine-tuning activity has already been configured.

Answer: B