Three students

Alex is an art-student who sends an email to Bert. Charles is not an art-student. Bert sends an email to Charles.

Now the simple question is: Does an art student send an email to someone who is not an art student?

Yes or No? Or can’t decide because of lack of information?.

This puzzle comes from a presentation by Paul Fenwick, which you can find here

If you solved it, we have the solution so you can check yours.