No dealer shall be prosecuted under this part for a violation concerning any food, drug, device, or cosmetic that is contained in an original, unbroken, and undamaged package that bears the original labeling if all of the following requirements are satisfied:
(a) He or she has used reasonable care in the storage and handling of the food, drug, device, or cosmetic.
(b) He or she received the food, drug, device, or cosmetic in the usual channels of trade as first-class merchantable stock and not as seconds or damaged articles or job lots purchased under conditions that indicate that the food, drug, device, or cosmetic was not usual first-class merchandise.
(c) He or she can produce a guarantee to the effect that the food, drug, device, or cosmetic is not adulterated, misbranded, or falsely advertised, within the meaning of this part, or that it is not a food, drug, device, or cosmetic which, pursuant to this part, may not be sold or offered for sale in this state.