Which solution should a consultant recommend to facilitate the collaboration of the lead sales representative and team members?

Universal Containers sells products that require frequent collaboration with the same team of individuals who play a key role in closing deals. The lead sales representative determines the level of access for each of the collaborating team members on an opportunity.

Which solution should a consultant recommend to facilitate the collaboration of the lead sales representative and team members?
A . Enable Chatter to have the lead sales representative facilitate collaboration through sales team swarming.
B . Configure default opportunity teams for all lead sales representatives with team selling enabled.
C . Define a sharing rule for each lead sales representative to assign appropriate access for all extended team members.
D . Create public groups for extended team members and allow the sales representative to assign manual sharing on their opportunities.

Answer: B