Question: Which OCL expression checks if the hotel has more than one staff member? Assume Hotel context. Question 9 Answer a . self.staff - > size

Which OCL expression checks if the hotel has more than one staff member? Assume Hotel context.
Question 9Answer
a.
self.staff->size()=1
b.
self.staff->exists(s | s <> null)
c.
self.staff->size()>1
d.
self.staff->notEmpty()

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