Correct Option: A

Boric acid (H₃BO₃), also called hydrogen borate, boracic acid, orthoboric acid and acidum boricum, is used in prickly heat powders to prevent excessive sweating. Boric acid is also used as an antiseptic for minor burns or cuts and is sometimes used in dressings or salves. As an antibacterial compound, boric acid can also be used for acne treatment.