यदि $f(x) = \int_{0}^{x} t \sin t \,dt$ है,तो $f^{\prime}(x)$ है

  • A
    $\cos x + x \sin x$
  • B
    $x \sin x$
  • C
    $x \cos x$
  • D
    $\sin x + x \cos x$

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