If $\frac{d^2y}{dx^2} + \sin x = 0$,then the solution of the differential equation is:

  • A
    $\sin x + c_1x + c_2$
  • B
    $\cos x + c_1x + c_2$
  • C
    $\tan x + c_1x + c_2$
  • D
    $\log(\sin x) + c_1x + c_2$

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