What is wrong with the following code snippet?

public class Area

$\{$

public static void main$($String$[]$ args$)$

$\{$

int width $=10$;

height $=20\mathrm{.}00$;

System.out.println$("$area $="+($width $*$ height$))$;

$\}$

$\}$

Question $4$ options:

The code snippet uses an uninitialized variable.

The code snippet attempts to add a number to a string variable.

The code snippet attempts to assign a decimal value to an integer variable.

The code snippet uses an undeclared variable.