A.tuples may be stored inside lists

B.tuples may not be stored inside tuples

C.lists may be stored inside lists

D.lists may not be stored inside tuples

A.4

B.2

C.3

D.an exception is raised

A.'key' in diet

B.'key' in diet.keys()

C.diet.exists('key')

D.diet['key'] != None

A.an object is a recipe for a class

B.inheritance is the relation between a superclass and a subclass

C.encapsulation allows you to protect some data from uncontrolled access

D.the arrows on a class diagram are always directed from a superclass towards its subclass

A.a ( ) == 4

B.b ( ) == 4

C.a is not None

D.a ! = b