The differential equation $\frac{d^3y}{dx^3} + 2\left[ 1 + \frac{d^2y}{dx^2} \right] = 1$ has order and degree as:

  • A
    $3, 1$
  • B
    $3, 2$
  • C
    $2, 3$
  • D
    $1, 3$

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