What is the probable cause?

You received an e-mail from a portfolio manager asking you to check performance metrics for the
past months on each of the projects filtered for that portfolio.
You cannot locate the portfolio that the email references.
What is the probable cause?

A.
It is a user portfolio created by the portfolio manager.

B.
It is a user-filtered portfolio that has not been refreshed.

C.
You do not have the appropriate license for the web interface.

D.
You have not been assigned as a resource to the projects.