Use Interval Notation to Describe the Set of Numbers $( - \infty , 35 ]$

Multiple Choice

Use interval notation to describe the set of numbers.
-John is at least 35 years old.

A) $( - \infty , 35 ]$
B) $[ 35,55 ]$
C) $[ 35 , \infty )$
D) $( 35 , \infty )$