What scoring options are available through the Marketing Cloud Account Engagement Connectors?

LenoxSoft would like to set custom scoring based on event attendance.

What scoring options are available through the Marketing Cloud Account Engagement Connectors?
A . Webinar & Event invite. Registrations & Attendance
B . Webinar & Event Registrations & Attendance
C . Webinar: Attended/NoShow/Registered Event: Checked In/Registered
D . Only Webinar & Event Attendance

Answer: C