Assertion : Ease of dehydraction of alcohols follows the order : Tertiary `gt` Secondary `gt` Primary.
Reason : Dehydration proceeds through the formation of oxonium ion.
A. If both (A) and (R ) are correct and (R ) is correct explanation of (A ).
B. If both (A ) and (R ) are correct but (R ) is not correct explanation of (A ).
C. If (A) is correct but (R ) is incorrect
D. If (A) is incorrect but (R ) is correct.