What are some activities the project team will perform in executing project work during the Explore Phase?

What are some activities the project team will perform in executing project work during the Explore Phase?
A . Deal with user authorization requests
B . Collect project data and report on progress and performance
C . Manage risks and implement risk response activities
D . Establish and manage internal and external communications
E . Manage Background Jobs, Input and Output

Answer: B,C,D