Elite colleges make it clear that 'most rigorous ’ is not equivalent to 'all ap’s '. I supposed it’s a losing battle now but I hope someone educateq your school that colleges never thought the mention ‘reasonably’ would need to be added to 'most rigorous ’ when they asked for 'mist rigorous ', especially when they make it very clear on their admission pages that they DO NOT want to see all-AP schedules.
Don’t forget to retake statistics in college, where the class will be more complete/in depth (and may have different versions: social science, biology, business…) as, if you take it in college, it can go on the line for 'relevant coursework ’ regardless of internship applied for.