What is/are the correct code(s) for a corrosion of the breast, third degree due to accidental spillage of concentrated lye?

After several cycles of lab testing on test animals, a medication can enter clinical trials for evaluation in humans. In phase III clinical trial testing:

A) the trial is expanded to include a large sample size, usually in the thousands of individuals, and establish the overall safety and effectiveness of the drug. B) the medication is compared to other medications on the market. C) consists of the drug being tested on a small number (usually 300 or less) of people with the illness or condition the drug is designed to treat. D) researchers attempt to determine the safe dose and how the medication is both absorbed and eliminated from the body.

Cervical spondylosis is a degenerative change in the cervical spine that causes:

A) destruction of the intervertebral discs and vertebral fractures. B) narrowing of the spinal canal and pressure on the spinal cord. C) lateral curvature of the cervical spine with cord impingement. D) fracture of the odontoid process of the second cervical vertebra.