Choose the sentence that shows the CORRECT use of a comma in any type of sentence

We went to the party and, we had a great time.
The final exam is on Monday, and, it will be a multiple-choice test.
The contest prizes will be tickets for movies, restaurants, and, shows.
The manager is the top boss, so he can be strict with the employees.

The manager is the top boss, so he can be strict with the employees.