Write a C# method with this signature and submit the .cs file:

public static ArrayList Union(ArrayList a, ArrayList b)

The method should return a list of objects that are in either of the two argument vectors.

You'll use this program to answer questions in a subsequent exercise.

1. You may discover a variety of ambiguities in the assignment. In other words, ample opportunities for defects exist. Describe as many possible defects as you can. Submit either a text file or a Word doc. (8 points)

1. Create a set of test cases that you think would have a reasonable chance of revealing the faults you identified above and document the rationale in your test set as inline comments. (Note: you don't have to use a test framework for this. Just put your test code in Main() and call the Union method for each test. Print "test passed" or "test failed" for each test. Submit a .cs file including the Main() method with tests and the Union method. (12 points)
2. (recommended) Run your tests with your implementation to ensure you get the expected results.