Write a question about the following article.

He comes up with scenarios and speculation and gets into the flavor of things rather well . I was very wired on coffee and had bouncy leg while I was sitting , and I could see him looking at it and I would try to control it to no avail . Bounce bounce bounce . Energy pent up .

Question:
Why is the narrator so full of energy ?
Select from the following. [I] They 've had a good night sleep .. [II] None of the above choices .. [III] They 've had a lot of caffeine .. [IV] They 've had a lot of Red Bull ..