Find the Intersection of the Given Intervals $( - \infty , \infty ) \cap [ - 9 , \infty )$

Multiple Choice

Find the intersection of the given intervals.
- $( - \infty , \infty ) \cap [ - 9 , \infty )$

A) $( - \infty , \infty )$
B) $( - \infty , - 9 ]$
C) $\varnothing$
D) $[ - 9 , \infty )$