Sentence Correction

3) The CEO of Laminar Flow gave his R & D team a new $300 million dollar research facility, with cutting-edge technology, that they can research potentially revolutionary innovations in.
(A) that they can research potentially revolutionary innovations in
(B) for conducting research about revolutionarily potential innovations
(C) that can be the place for them to research potentially revolutionary innovations
(D) where it would be conducting research into revolutionary potential innovations
(E) in which to conduct research into potentially revolutionary innovations

3) The CEO of Laminar Flow gave his R & D team a new $300 million dollar research facility, with cutting-edge technology, that they can research potentially revolutionary innovations in.

(A) that they can research potentially revolutionary innovations in

(B) for conducting research about revolutionarily potential innovations

(C) that can be the place for them to research potentially revolutionary innovations

(D) where it would be conducting research into revolutionary potential innovations

(E) in which to conduct research into potentially revolutionary innovations

A and C have a pronoun issue. "they" and "them" are plural, but they refer to "R&D team", which is singular.

In B, "revolutionarily potential" is bizarre, and I'm not even sure what it means.

D has a weird tense, conditional progressive ("would be conducting"), that I don't think the sentence requires. Additionally, "revolutionary potential" does not mean the same thing as "potentially revolutionary", and the second option makes more sense.

E is pretty good. The CEO gave the team a new facility in which to conduct research.

Hey!
Can I say that option "E" is the only option that follows infinitives of purpose.
If yes, then is it a thumb rule?

Regards,
Mukherjee