A Patient Is Brought to the Emergency Department from the Site

A patient is brought to the emergency department from the site of a chemical fire, where he suffered a burn that involves the epidermis, dermis, and the muscle and bone of the right arm. On inspection, the skin appears charred. Based on these assessment findings, what is the depth of the burn on the patients arm?

A) Superficial partial-thickness
B) Deep partial-thickness
C) Full partial-thickness
D) Full-thickness