please dont go on assumptions. I have gone through the Medical Test this week. They test your blood and take x-ray of chest. I am sure in blood test you will be tested positive for hep B and tehy might fail you in Medical.

If you ask for serious advise then in my opinion you must tell your employer in advance and their PRO shall check and revert back to you.

The area of work does not matter at all nor you need to write any where in the registration form , which field you are going to work. So dont be under imperession that its not applicable for Sales and marketing jobs.