Which quantities in the previous question vary inversely with each other?

In option (b),

If we multiply p and q with 1,2,3 and 4, we get the given result. But it is not given inversely.

In option (c),

If we multiply r with 2.5 and s with 2.5, we will get the given result.

In option (d),

If u = 2, then v = 18

If u = 4, then v = 9

If u = 6, then v = 6

If u = 9, then v = 4

And if u = 12, then v = 3

It shows, when u increases, then v decreases.

Hence it is inversely with each other.