The equations to a pair of opposite sides of a parallelogram are $x^2 - 5x + 6 = 0$ and $y^2 - 6y + 5 = 0$. The equations to its diagonals are

  • A
    $x + 4y = 13$ and $y = 4x - 7$
  • B
    $4x + y = 13$ and $4y = x - 7$
  • C
    $4x + y = 13$ and $y = 4x - 7$
  • D
    $y - 4x = 13$ and $y + 4x = 7$

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