Long Term Cd Rate I'm Trying To Decide Between Long Term CD's Or Series EE Bonds For My Daughters College Fund.?

I'm trying to decide between long term CD's or Series EE Bonds for my daughters College fund.? - long term cd rate

How do I know what the best option. The CD has an interest rate of 5%. I will in 20 years out project. Of course I can calculate the interest on the CD, but how can I know what the U.S. uses?