$($T or F$)$ All of the following statements are true:

The switch$-$expression $($in the parenthesis$)$ must evaluate to an integral value $($char$,$ boolean, integer, etc.$).$

The default case is optional, but can be used when none of the other cases match the switch$-$expression.

The keyword break is optional. It immediately ends the switch.

When the value in a case statement matches the value of the switch$-$expression, the statements starting from this case are executed until the end of the switch is reached or a break statement is reached.