If y = 1/√(x² + 1), find dy/dx.

Options

• Option A

  -x/(x² + 1)³ᐟ²

• Option B

  x/(x² + 1)³ᐟ²

• Option C

  -1/[2(x² + 1)³ᐟ²]

• Option D

  -2x/√(x² + 1)