Question: Which OCL expression checks if a customer has no reservations? Assume Customer context. Question 9 Answer a . self.reservations - > size ( ) =

Which OCL expression checks if a customer has no reservations? Assume Customer context.
Question 9Answer
a.
self.reservations->size()=0
b.
self.reservations->exists(r | r.startDate = null)
c.
self.reservations->isEmpty()
d.
self.reservations->notEmpty()

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