Which sentence is punctuated correctly?
Within minutes of hearing the news, we had raced home; sure enough, our friends had just arrived and were waiting for us.
within minutes of hearing the news, we had raced home sure enough, our friends had just arrived and were walting for us.
Within minutes of hearing the news, we had raced home, sure enough, our friends had just arrived and were waiting for us.
Within minutes of hearing the news, we had raced home. sure enough, our friends had just arrived and were waiting for us.