Use the Discriminant to Decide Whether the Equation Represents a Parabola

Use the discriminant to decide whether the equation represents a parabola, an ellipse, or a hyperbola.
- $$3 x ^ { 2 } + 6 x y + 3 y ^ { 2 } - 2 x + 4 y = 0$$

A) Parabola
B) Ellipse
C) Hyperbola