What is the output of the following code? >>> a={"a":1,"b":2,"c":3} >>> b=dict(zip(a.values(),a.keys())) >>> b

• A. {‘a’: 1, ‘b’: 2, ‘c’: 3}
• B. An exception is thrown
• C. {‘a’: ‘b’: ‘c’: }
• D. {1: ‘a’, 2: ‘b’, 3: ‘c’}