If a and b are inversely proportional and the value of a becomes 3 times as big what happens to b

3 times lesser

     a and b are inversely proportional,

                                                a ∝ (1/b)

                                                or a  =  k/b                 where k =constant ,

                                             if a is 3 times increased  what happens to b ?

                                                  b is 3 times less.

the correct answer would be d. hope this !