यदि रेखा $x \cos \alpha + y \sin \alpha = p$ दीर्घवृत्त $\frac{x^{2}}{a^{2}} + \frac{y^{2}}{b^{2}} = 1$ का अभिलंब है,तो

• A
  $p^{2}(a^{2} \cos^{2} \alpha + b^{2} \sin^{2} \alpha) = a^{2} - b^{2}$
• B
  $p^{2}(a^{2} \cos^{2} \alpha + b^{2} \sin^{2} \alpha) = (a^{2} - b^{2})^{2}$
• C
  $p^{2}(a^{2} \sec^{2} \alpha + b^{2} \operatorname{cosec}^{2} \alpha) = a^{2} - b^{2}$
• D
  $p^{2}(a^{2} \sec^{2} \alpha + b^{2} \operatorname{cosec}^{2} \alpha) = (a^{2} - b^{2})^{2}$