Assertion `:` `2,3-` dimethyl but`-2-`ene decolorizes `Br_(2)` water.
Reason`:` `2,3-`dimethyl but`-2-`ene is an unsaturated compound.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer

d

Explanation

does not decolourise `Br_(2)` water as it does not contain olefinic `H` atom, `i.e.,` all the olefinic `H` atoms are substituted by `-CH_(2)` group. No doubt it is an unsaturated compound.