Give the Equation of the Function G Whose Graph Is $f ( x ) = 6 \sqrt { x - 1 } + 5$

Multiple Choice

Give the equation of the function g whose graph is described.
-The graph of $f ( x ) = 6 \sqrt { x - 1 } + 5$ is reflected across the $x$ -axis .

A) $g ( x ) = - 6 \sqrt { x - 1 } + 5$
B) $g ( x ) = 6 \sqrt { - x - 1 } + 5$
C) $g ( x ) = 6 \sqrt { - x - 1 } - 5$
D) $g ( x ) = - 6 \sqrt { x - 1 } - 5$