Antiseptics and disinfectants kill microbes or prevent their growth. Which one of the following statements related to them is not true-
A. disinfectants are harmful to living tissues
B. a 0.2% solution of phenol is an antiseptic
C. chlorine and iodine are used as a strong disinfectant
D. dilute solution of boric acid & `H_2O_2` is an antiseptic
