Question: Which OCL expression checks if a customer has stayed in a room that has a King bed type? Assume Customer context. a . self.reservations -

Which OCL expression checks if a customer has stayed in a room that has a "King" bed type? Assume Customer context.
a.
self.reservations->exists(r | r.bookedRooms->exists(room | room.bedType = 'Queen'))
b.
self.reservations->exists(r | r.bookedRooms->exists(room | room.bedType = 'Double'))
c.
self.reservations->exists(r | r.bookedRooms->exists(room | room.bedType = 'King'))
d.
self.reservations->notEmpty()

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