QUESTION $11$

Which of the following PHP code snippets correctly checks whether a variable $$x$ is equal to either "abc," "def," or "ghi"?

A$.$ if $($ $$x==$ "abc" $||$ $$x==$ "def" $||$ $x$==$ "ghi"$)\{$ echo "true";

$\}$ else $\{$

echo "false";

$\}$

B$.$ if "abc" & & $$x==$ "def" & & $$x==$ "ghi"$)\{$

echo "true";

$\}$ else $\{$

echo "false";

$\}$

C$.$ if "abc" $|$$$x|==$ "def" $|$ $x$==$ "ghi"$)\{$

echo "true";

$\}$ else $\{$

echo "false";

$\}$

D$.$ if "abc" $||$ $x$=$ "def" $||$ $x$=$ "ghi"$)\{$

echo "true";

$\}$ else $\{$

echo "false";

$\}$

E$.$ None of the above