Read the following run-on sentence:

Ian is very excited about making homemade ginger ale he is also a little nervous.

Which of the revisions corrects the sentence?


Ian is very excited about making homemade ginger ale, and, he is also a little nervous.


Ian is very excited about making homemade ginger ale, he is also a little nervous.


Ian is very excited about making homemade ginger ale; but he is also a little nervous.


Ian is very excited about making homemade ginger ale. He is also a little nervous.