Which of the following statement about emulsions is true?

• A. Oily drugs cannot be prepared in the form of emulsions
• B. Digestion does not involve the process of emulsification
• C. Disinfectants like Dettol and Lysol give emulsions of water-in-oil type on mixing with water
• D. The cleansing action of soap is based upon the formation of water-in-oil emulsion