Question: This code is occasionally throwing a null pointer exception (NPE). How can you change the code so it never throws as NPE?

1. Replace `!!.` with `?.`
2. Replace `!!.` with `?:.`
3. Surround the line with a try/catch block.
4. Replace `!!.` with `?.let`.

Answer: The correct answer of the above question is Option A:Replace `!!.` with `?.`