If the function $g\(\left\)(x\(\right\))=6\(\sqrt{-x}\)$ is graphed, how does its graph compare to the graph of $y=6\(\sqrt{x}\)$?

• A. Reflected across the $y$-axis
• B. Reflected across the $x$-axis
• C. Vertically stretched by a factor of $6$
• D. Translated $6$ units upward