The position $x$ of a particle at any instant is related to its velocity $v$ by the equation $v = \sqrt{2x + 9}$. The particle starts from the origin. What are the initial acceleration and initial velocity of the particle?

  • A
    $1\, \text{unit}, 3\, \text{unit}$
  • B
    $2\, \text{unit}, 3\, \text{unit}$
  • C
    $4\, \text{unit}, 81\, \text{unit}$
  • D
    $9\, \text{unit}, 3\, \text{unit}$

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