If you had to choose one, would you rather be deficient in thiamin, pantothenic acid, niacin, or riboflavin? Why that one, and why not the others?

Question: If you had to choose one, would you rather be deficient in thiamin, pantothenic acid, niacin, or riboflavin? Why that one, and why not the others?
 * Please discuss all four vitamins, but only include the most relevant information needed to make your point. A couple of sentences for each vitamin may be enough
.
* You can focus on the deficiency signs and symptoms, but you could also consider the pathways or processes they are needed for (even if there isn’t a clear connection to a sign/symptom). A more advanced factor would be to consider the effect one deficiency might have on another.
 * There is no right or wrong answer, but your choice and reasoning should be clear.
 * Please give this question some thought and answer in a way that is meaningful to you. Creativity and individuality is encouraged! (For example, I wouldn’t want to be biotin deficient because it may cause hair loss, and I care how my hair looks on camera! Laughing ) It’s okay to take a lighter approach to this. 

No sources required.