The correct option is D Stomach
In human beings, apart from kidneys, the excretion can occur through the liver, skin and lungs. Liver is the main site for the elimination of cholesterol, bile pigments and drugs, etc. The sweat and sebaceous glands are present in the skin. Sweat is a watery fluid produced by the sweat glands that contains NaCl, small amounts of urea, lactic acid, etc. Sebaceous glands eliminate substances like sterols, hydrocarbons and waxes through sebum. Lungs secrete out large amounts of CO2.