4. No person shall sell any food with a label, whether or not attached to or printed on the wrapper or container, which bears, comprises or includes any reserved description or any derivative thereof or any word or description substantially similar thereto unless–
(a)such food is the specified sugar product to which the reserved description relates;
(b)such derivative, description or word is used in such a context as to indicate explicitly or by clear implication that the substance to which it relates is only an ingredient of that food;
(c)such derivative, description or word is used in such a context as to indicate explicitly or by clear implication that such food is not and does not contain a specified sugar product; or
(d)such derivative, description or word is used in a customary name for another food and is not liable to mislead the consumer.