Let $f$ Be Defined by the Following Graph $y=(-2) f(x)$
A) a Version of the Graph Of

Let $f$ be defined by the following graph.

Describe the graph of $y=(-2) f(x)$ .

A) A version of the graph of $f$ reflected across the $x$ -axis, stretched vertically by a factor of 2.
B) A version of the graph of $f$ reflected across the $x$ -axis, compressed by a factor of $1 /2$ .
C) A version of the graph of $f$ reflected across the $y$ -axis, stretched vertically by a factor of 2.
D) A version of the graph of $f$ reflected across the $y$ -axis, compressed by a factor of 2..