In a matrix organizational form, which factor(s) make it difficult for a project manager to provide a valid input into the employee’s performance review?

A.
All of the other alternatives apply

B.
Employees spend only a short amount of time assigned to the project

C.
Not working directly with the assigned functional employees

D.
Not being knowledgeable enough to evaluate employees on technical judgment

E.
Both 1) Not working directly with the assigned functional employees, and 2) Employees spend only a short amount of time assigned to the project.