Given below are two statements: one is labelled as Assertion $\mathbf{A}$ and the other is labelled as Reason $\mathbf{R}$. Assertion A: The potential $(V)$ at any axial point, at 2 m distance $(r)$ from the centre of the dipole of dipole moment vector $\vec{P}$ of magnitude, $4 \times 10^{-6} \mathrm{C} \mathrm{m}$, is $\pm 9 \times 10^3 \mathrm{~V}$. (Take $\frac{1}{4 \pi \epsilon_0}=9 \times 10^9$ SI units) Reason $\mathbf{R}$ : $V= \pm \frac{2 P}{4 \pi \epsilon_0 r^2}$, where $r$ is the distance of any axial point, situated at 2 m from the centre of the dipole. In the light of the above statements, choose the correct answer from the options given below:

• A

  Both A and R are true and R is NOT the correct explanation of A .
• Correct answer
  B

  $A$ is true but $R$ is false.
• C

  $A$ is false but $R$ is true.
• D

  Both $A$ and $R$ are true and $R$ is the correct explanation of $A$.

Hence, the correct answer is option: 'B'.