What you do after hours has no impact on your professional reputation since you are not at work

During the rapid head-to-toe assessment of a patient with multiple injuries, you expose the chest and find an open wound with blood bubbling from it. You should:

A: place a porous dressing over the wound. B: apply high-flow supplemental oxygen. C: prevent air from entering the wound. D: stop your assessment and transport.

Calculate the magnification factor when the SID is 72 in. and the OID is 2 in.

What will be an ideal response?