521.04 UNLAWFUL SALE OR POSSESSION BY LICENSEE.
   No person licensed under West Virginia Code Chapter 60 shall:
   (a)    Sell alcoholic liquors of a kind other than that which is permissible under West Virginia Code Chapter 60;
   (b)    Sell beer to which wine, spirits or alcohol has been added;
   (c)    Sell wine to which other alcoholic spirits have been added, otherwise than as required in the manufacture thereof under regulations of the West Virginia Alcohol Beverage Control Commissioner; (WVaC 60-6-8)
   (d)    (1)    Sell alcoholic liquors or nonintoxicating beer to a person who is:
         A.    Less than twenty-one years of age;
         B.    An habitual drunkard;
         C.    Intoxicated;
         D.    Addicted to the use of any controlled substance as defined by West Virginia Code Chapter 60A;
         E.    Mentally incompetent.
      (2)    It shall be a defense to a violation of subsection (d)(l)A. hereof if the seller shows that the purchaser:
         A.    Produced written evidence which showed his or her age to be at least the required age for purchase and which bore a physical description of the person named on the writing which reasonably described the purchaser; or
         B.    Produced evidence of other facts that reasonably indicated at the time of sale that the purchaser was at least the required age.
            (WVaC 60-3-22)
   (e)    Keep on the premises covered by his license any alcoholic liquor other than that which is authorized by West Virginia Code Chapter 60. (WVaC 60-6-8)