Correct option is A
In reverse polarity welding, also known as Direct Current Electrode Positive (DCEP), the electrode holder (or electrode) is connected to the positive terminal of the power source, and the workpiece is connected to the negative terminal. This setup causes electrons to flow from the workpiece to the electrode, resulting in more heat being generated at the electrode tip. This configuration is often used for welding thin metals and when deeper penetration is required because it produces a more stable arc and better control over the weld.
