For $$- \infty < x < \infty \& -1 < y < 1$$, the partial differential equation $$ x^{2} \frac{\partial^{2} u}{\partial x^{2}} + (1 - y^{2}) \frac{\partial^{2} u}{\partial y^{2}} = 0$$ is

A

parabolic

B

Hyperbolic

C

Elliptic

D

Nature connote be predicted