Assertion : Trans-2-butene on reaction with Br2 gives meso-2,3 -dibromobutane.
Reason : The reaction inolves syn -addition of bromine.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false