The product of two rational number is - 28/81 if one of the number is 14/27 then the other one is

Let us assume a and b are the two rational numbers

Given that the product of two rational numbers = (-28/81)

One number = (14/27)

Let a = (14/27)

So,

a x b = (-28/81)

(14/27) x b = (-28/81)

b = (-28/81) x (27/14)

b = (-2 x 3)/9

b = (-6/9)

We get,

b = (-2/3)

Hence, the correct option is (C)