If P is any point on the ellipse $\frac{x^2}{25}+\frac{y^2}{9}=1$ and $\mathrm{S}, \mathrm{S}^{\prime}$ are its foci, then the maximum area (in sq. units) of $\Delta \mathrm{SPS}^{\prime}=$

• A

  $15$
• Correct answer
  B

  $12$
• C

  $6$
• D

  $25$

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