Harry Homebuilder throws a holiday open house in a newly completed lakeside development. The aircraft, auto, or watercraft exclusion in Harry's CGL policy will remove coverage for which of the following?
a) Damage to the property caused by a malfunctioning aircraft during the open house event.
b) Injuries sustained by guests while operating a watercraft provided by Harry during the open house.
c) Theft of personal belongings from guests' automobiles parked at the lakeside development during the open house.
d) Liability for accidents involving guests' vehicles while driving to and from the lakeside development for the open house.