The separate equations of the lines represented by $4x^{2}-y^{2}+2x+y=0$ are
- A$2x-2y+1=0, x+2y=0$
- B$2x-y+1=0, 2x+y=0$
- C$2x-y+1=0, 2x-y=0$
- D$2x-y=0, 2x+y+1=0$
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