Compared to monophasic currents, biphasic currents are generally more safe because they are charge-balanced?

• A. Monophasic currents are always safer because they deliver no net charge.
• B. Biphasic currents deliver net charge, causing skin irritation.
• C. Monophasic currents deliver net charge causing polarization and skin irritation; biphasic currents are charge-balanced, reducing net charge and improving comfort and safety.
• D. Both have balanced charge; safety is identical.

Answer: (C)