How is the gravitational force between two point masses affected when they are dipped in water,keeping the separation between them the same?

(C) The gravitational force between two point masses is given by Newton's law of gravitation: $F = \frac{G m_1 m_2}{r^2}$.
This formula shows that the gravitational force depends only on the masses $(m_1, m_2)$ and the distance $(r)$ between them.
It does not depend on the medium present between the masses.
Therefore,when the masses are dipped in water while keeping the separation constant,the gravitational force remains unchanged.