Find the Range of the Function $y = 2 + \cos x$

Multiple Choice

Find the range of the function.
$y = 2 + \cos x$
Select the correct answer.

A) $( - \infty , \infty )$
B) $( 2 , \infty )$
C) $[ - 1,1 ]$
D) $( - 1,3 )$
E) $[ 1,3 ]$