Read the sentence.
 You can take a bus tour or you can join a camel safari.
 Which revision is correctly punctuated?
 You can take a bus tour or, you can join a camel safari.
 You can take a bus tour, or, you can join a camel safari.
 You can take a bus tour or you can join a camel safari.
 You can take a bus tour, or you can join a camel safari.