Find the Vertical Asymptote of the Logarithmic Function Below $f ( x ) = \log _ { 2 } ( x - 4 )$

Multiple Choice

Find the vertical asymptote of the logarithmic function below. $f ( x ) = \log _ { 2 } ( x - 4 )$

A) $x = 5$
B) $x = 2$
C) $x = - 5$
D) $x = - 4$
E) $x = 4$