What does the following code output?

Question

BlackTom AI · Accepted Answer

To determine the output, start by examining the two classes. A defines a method greet(self) that returns the string 'Hello from A'. B inherits from A and does not override greet, so B has access to A's greet method.

Option A: 'A' would only appear if there were some code that accessed a class name or a string literal, or if greet returned 'A'. Here, greet returns 'Hello from A', so this option is incorrect.

Option B: 'Nothing' would imply no output or a failure before printing. Since b = B() creates an instance and b.greet() returns a string, there is indeed output. This option is incorrect.

Option C: 'Hello from B' would require B to override greet to return that string. It does not, so this is incorrect.

Option D: 'greet' would be the name of the method or its representation if printed directly, but the code prints the result of b.greet(), not the function object. This option is incorrect.

Option E: 'Hello from A' is the actual result of calling b.greet() since B inherits greet from A without overriding it. Therefore the string returned by greet is exactly 'Hello from A'. This matches the execution.

Option F: 'Error' would indicate a runtime exception or syntax issue. The code as given is valid Python and runs without error, so this is incorrect.

IS 4485-001 Fall 2025 Final Exam

What does the following code output?

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