What is the cause of this problem?

A sales rep at Universal Containers (UC) is a member of the Default Opportunity team for an account manager. The account manager created an opportunity and the sales rep is added to that Opportunity team.

The sales rep is complaining about no longer having access to an opportunity record that the sales rep was helping with.

What is the cause of this problem?
A . The Account team was changed and consequently the Opportunity team members were replaced by the Account team members.
B. The Sales rep was manually removed from the Opportunity team.
C. The Sales rep was removed from the Opportunity team in another opportunity record of the same account.
D. The opportunity owner can enable/disable if the “Default Opportunity team” is able to access the record

Answer: B