In the A agriculture district, the following signs are also permitted:
A. On Premises Activities: Ground signs pertaining to activities conducted on the premises.
B. Off Premises Activities: Ground or post signs, not exceeding one hundred (100) square feet in area, advertising activities conducted within twelve (12) miles of the sign or providing information of direct interest to the traveling public, including points of interest, recreation and scenic areas, places for camping, lodging, eating, sale of farm supplies, and vehicular service and repair. (1997 Code)