; (2) in subclause (iii)— (A) by inserting either after a restaurant or similar retail food establishment shall ; and (B) by inserting or comply with subclause (ii) after per serving ; (3) in subclause (iv)— (A) by striking For the purposes of this clause and inserting the following: (I) In general For the purposes of this clause ; (B) by striking and other reasonable means and inserting or other reasonable means ; and (C) by adding at the end the following: (II) Permissible variation If the restaurant or similar food establishment uses such means as the basis for its nutrient content disclosures, such disclosures shall be treated as having a reasonable basis even if such disclosures vary from actual nutrient content, including variations in serving size, inadvertent human error in formulation or preparation of menu items, variations in ingredients, or other reasonable variations.