HELP!!! URGENT, LIMITED TIME!!!! PLEASE!

Which is the grammatically correct and best way to split up this run-
on:
Dean and his little brother Sam were on a road trip across the
country and they stopped at a diner for lunch and Dean who is
always hungry ordered a chili cheeseburger fries a soda and a big
slice of apple pie but Sam who likes to eat healthier ordered a
turkey sandwich and a salad.

Select one:

Dean and his little brother Sam were on a road trip across the
country and they stopped at a diner for lunch and Dean who is
always hungry ordered a chili cheeseburger, fries, a soda, and a
big slice of apple pie, but Sam, who likes to eat healthier, ordered
a turkey sandwich, and a salad.

Dean and his little brother Sam were on a road trip across the
country when they stopped at a diner for lunch. Dean, who is
always hungry, ordered a chili cheeseburger, fries, a soda, and a
big slice of apple pie. Sam, who likes to eat healthier, ordered a
turkey sandwich and a salad.

Dean and his little brother Sam were on a road trip. Across the
country. They stopped at a diner for lunch. Dean is always hungry.
He ordered a chili cheeseburger. Fries. A soda. And a big slice of
apple pie. Sam likes to eat healthier. He ordered a turkey
sandwich. And a salad.

Dean and his little brother: Sam, were on a road across the country and they stopped at a diner for lunch. Dean, who is always hungry, ordered: a chili cheeseburger, fries, a soda, and a big slice of apple pie; but Sam who likes to eat healthier, ordered: a turkey sandwich and a salad.