Physics · Electrostatic Potential

The electrostatic potential \( V \) at a distance \( r \) from a point charge \( Q \) is given by \( V(r) = \frac{Q}{4\pi\varepsilon_0 r} \). For a negative point charge (\( Q < 0 \)), which of the following statements is true?

1. A
   Potential is positive for all finite values of \( r \) and decreases as \( r \) increases.
2. B
   Potential is negative and increases toward zero as \( r \) approaches infinity.
3. C
   Potential is zero everywhere in the vicinity of the charge.
4. D
   Potential is negative for all finite values of \( r \) and its magnitude increases as \( r \) decreases.