ECM process is based on which of the following laws?

• A. Coulomb‚Äö√Ñ√∂‚àö√ë‚àö¬•s law
• B. Faraday‚Äö√Ñ√∂‚àö√ë‚àö¬•s law
• C. Law of definite proportions
• D. Law of chemical combination