5 (Report only) Answer the following questions: A: Describe the naming conventions for classes and variables identifiers.

B: Explain what is happening at each line of the following code: int x = 5, y = 20; x += 32; y /= 4; System.out.println("x = " + x + ", y = " + y);

C: Cite three different primitive data types and explain the differences between them.