In which one sentence is the comma correctly placed?After dinner, we watched a movie. She ran fast jumped high, and smiled. If you're, hungry please eat something

In which one sentence is the comma correctly placed?After dinner, we watched a movie. She ran fast jumped high, and smiled. If you're, hungry please eat something

Explanation

The comma is correctly placed after the introductory phrase "After dinner".

It properly separates the introductory element from the main part of the sentence.