( A ) $\frac{x}{2} - \frac{y}{3}=1$ and $\frac{x}{-2} + \frac{y}{1} = 1$
( B ) $\frac{x}{2} + \frac{y}{3}=-1$ and $\frac{x}{-2} + \frac{y}{1} = -1$
( C ) $\frac{x}{2} - \frac{y}{3}=1$ and $\frac{x}{-2} + \frac{y}{1} = -1$
( D ) $\frac{x}{2} + \frac{y}{3}=1$ and $\frac{x}{-2} + \frac{y}{1} = 1$