249. To determine whether or not an advertisement is directed at persons under thirteen years of age, account must be taken of the context of its presentation, and in particular of(a) the nature and intended purpose of the goods advertised;
(b) the manner of presenting such advertisement;
(c) the time and place it is shown.
The fact that such advertisement may be contained in printed matter intended for persons thirteen years of age and over or intended both for persons under thirteen years of age and for persons thirteen years of age and over, or that it may be broadcast during air time intended for persons thirteen years of age and over or intended both for persons under thirteen years of age and for persons thirteen years of age and over does not create a presumption that it is not directed at persons under thirteen years of age.