Engineering Undeclared

Hi,
I had some concerns regarding the engineering undecided program. I am still undecided between mechanical and chemical and the University of Delaware’s excellent ChemE program made this a really hard choice. I instead applied for EU, but I was a bit uncertain as to how it works. Assuming my grades were alright, am I 100% guaranteed entry into my major of choice? Since i’m an international student, i’d rather not be stuck in a situation where i’m forced to take a major I don’t want to do.
Thanks!

I am in the same situation here, I am an international student who got into engineering- undecleared. I read the webiste and it says that after the first semester you can finish at any of the majors of engineering.