The human skin possesses sweat and sebaceous glands. Consider the following statements: (1) The human skin possesses sweat and sebaceous glands which eliminate some wastes in their secretion (2) Sweat is a waxy protective secretion having sterols, hydrocarbons and fatty acids (3) Sebum is an aqueous fluid having NaCl, lactic acid, urea, amino acids and glucose Which of the above statements is/are correct?