The equations of the lines represented by the equation $ax^2 + (a + b)xy + by^2 + x + y = 0$ are
- A$ax + by + 1 = 0$,$x + y = 0$
- B$ax + by - 1 = 0$,$x + y = 0$
- C$ax + by + 1 = 0$,$x - y = 0$
- DNone of these
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