How can an Administrator accomplish this?

Universal Containers would like their sales reps to be able to send branded email invitations to customers for business meetings and to collaborate with customers from a branded Website to find a suitable meeting time.

How can an Administrator accomplish this?
A . Create a custom email template for invitations that displays your compant logo
B . Add a company logo to meeting requests in Salesforce
C . Create an external integration with Google calendar using Sites
D . Enable Chatter to allow reps to Communicate with customers

Answer: B