According to lecture, it seems that other animals such as chimpanzees $\_\_\_\_\_\_$ because $\_\_\_\_\_\_.$

A$.$ cannot develop language; they can not even demonstrate the basics

B$.$ can develop language; all isolated children can as well

C$.$ can develop language; they show propositional thought

D$.$ can develop language; syntax seems to be present

E$.$ can not develop language; there is no real syntax