Solve the Inequality $$x ^ { 4 } + x ^ { 2 } \geq 0$$

Multiple Choice

Solve the inequality. $$x ^ { 4 } + x ^ { 2 } \geq 0$$

A) $( - \infty , 0 ]$
B) { }
C) $( - \infty , \infty )$
D) $( - \infty , - 1 ] \cup [ 0 , \infty )$