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Assuming that both Class2 and class3 have default constructors, which is (are) valid in a client class?
I class1 c1 = new Class2(); II class2 c2 = new Class3(); III class3 c3 = new Class3(); a. I only b. II only c. III only d. I and II only e. I, II, and III
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Assuming you correctly capitalize your class names and Class3 inherits from Class2 which inherits from Class1, all three are valid. If not, only III is valid with correct capitalization.