यदि $y = (1 + \tan A)(1 - \tan B)$ जहाँ $A - B = \frac{\pi}{4}$ है,तो $(y + 1)^{y + 1}$ का मान क्या होगा?

  • A
    $9$
  • B
    $4$
  • C
    $27$
  • D
    $81$

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