In the acid catalyzed dehydration reaction of an alcohol, which of the ... ...

In the acid catalyzed dehydration reaction of an alcohol, which of the following aspects listed can definitely be true?  
(A) There can be no rearrangement of the intermediate, regardless of the alcohol involved.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 16. Alkenes