किस बिंदु पर वक्र $y = \cos(x + y)$,$x \in [-2\pi, 2\pi]$ की स्पर्श रेखा $x + 2y = 0$ के समानांतर है?

  • A
    $(\pi/2, 0)$
  • B
    $(-\pi/2, 0)$
  • C
    $(3\pi/2, 0)$
  • D
    $(-3\pi/2, \pi/2)$

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