and inserting the following: (A) In general Lunches served by schools participating in the school lunch program under this Act— (i) shall offer students a variety of fluid milk, which may include (at the school’s option) low-fat and fat-free milk. Such milk shall be offered with each lunch in amounts consistent with recommendations in the most recent Dietary Guidelines for Americans published under section 301 of the National Nutrition Monitoring and Related Research Act of 1990 ( 7 U.S.C. 5341 )