The Critical Point $( 0 , - 2 )$ Of the System

Multiple Choice

The critical point $( 0 , - 2 )$ of the system $x ^ { \prime } = x ^ { 3 } - y ^ { 2 } + 4 , y ^ { \prime } = 5 x$ is a

A) stable node
B) unstable node
C) stable spiral point
D) unstable spiral point
E) saddle point