C#.NET — Which of the following is NOT an arithmetic operator?

Introduction / Context:
This question tests knowledge of valid arithmetic operators in C#. Arithmetic operators are symbols used to perform standard mathematical operations like addition, subtraction, multiplication, division, and modulus.

Given Data / Assumptions:

• C#.NET operators include +, -, *, /, %.
• There is no exponentiation operator ** in C#.

Concept / Approach:
In C#, mathematical exponentiation is not achieved through ** but rather via the Math.Pow method. Recognizing invalid operator tokens is essential to avoid syntax errors.

Step-by-Step Solution:

Verification / Alternative check:
Trying Console.WriteLine(2 ** 3); in C# produces a compile-time error. The correct way is Console.WriteLine(Math.Pow(2,3)).

Why Other Options Are Wrong:
All other listed operators are legitimate arithmetic operators in C#.

Common Pitfalls:
Assuming C# follows Python's or other languages' syntax for exponentiation. C# does not support **.

Final Answer:
**