Question: The Class table contains 21 classes and the Professor table contains 14 professors. The Professor table and the Class exhibit I:M relationship (i.e. a professor

The Class table contains 21 classes and the

The Class table contains 21 classes and the Professor table contains 14 professors. The Professor table and the Class exhibit I:M relationship (i.e. a professor can teach multiple classes). A natural join of the two tables yields 17 records. Class left join Professor yields 21 records. Class right join Professor yields 22 records. How many classes do NOT have a professor? O A.4 OB.5 OC.3 DO The Class table contains 21 classes and the Professor table contains 14 professors. The Professor table and the Class exhibit I:M relationship (i.e. a professor can teach multiple classes). A natural join of the two tables yields 17 records. Class left join Professor yields 21 records. Class right join Professor yields 221records. How many professors do NOT teach any class? O A.5 1.4 O C.3 O 0.8

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