The equation to the pair of straight lines through the origin which are perpendicular to the lines $2x^2 - 5xy + y^2 = 0$ is:
- A$2x^2 + 5xy + y^2 = 0$
- B$x^2 + 5xy + 2y^2 = 0$
- C$x^2 - 5xy + 2y^2 = 0$
- D$2x^2 + y^2 - 5xy = 0$
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