D V T More Condition_symptoms Im Looking For A Job Online. I Have A Quick Curiousity Question. What Does M/F/D/V Stand For?

Im looking for a job online. I have a quick curiousity question. What does M/F/D/V stand for? - d v t more condition_symptoms

I know that M probably a male, F is likely a woman, but what is the D and V?