For a body performing simple harmonic motion,its potential energy is $E_x$ at displacement $x$ and $E_y$ at displacement $y$ from the mean position. The potential energy $E_0$ at displacement $(x+y)$ is

  • A
    $\sqrt{E_x^2+E_y^2}$
  • B
    $\sqrt{E_x-E_y}$
  • C
    $E_x+E_y$
  • D
    $E_x+E_y+2 \sqrt{E_x E_y}$

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