Both groups and individuals are eligible to apply. Moreover, working with teams of university students might be a great opportunity to build your team, in case you need to. During past C2E calls, this was a positive side effect that startup founders took in serious consideration.
Just make sure, in case you are a solo founder, that you’ll have enough time to dedicate to the project during C2E acceleration. There is no implicit guarantee that you will proceed through all of the steps, in case you don’t keep up with the work your startup requires.