Python's built-in function named open () tries to open a file and returns:

• A.an error code (0 means success)
• B.a stream object
• C.an integer value identifying an opened file
• D.always None

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What is the expected behavior of the following code?

• A.it outputs 1
• B.it outputs 0
• C.it outputs 2
• D.it raises an exception

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What is the expected behavior of the following code?

• A.it raises an exception
• B.it outputs True
• C.it outputs False
• D.it outputs nothing

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What is the expected output of the following snippet?

• A.False lower
• B.False upper
• C.True upper
• D.True lower

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Which line can be used instead of the comment to cause the snippet to produce the following expected output? (Select two answers) Expected output:
1 2 3
Code:

• A.c, b, a = a, c, b
• B.a, b, c = c, a, b
• C.a, b, c = a, b, c
• D.c, b, a = b, a, c

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