The PHP code below throws an exception at line $\_\_\_\_\_.$

$1.$ $sql $=$ "INSERT INTO Teacher $".$

$2."($LastName$,$ FirstName, Department$)".$

$3.$ "VALUES $(?,?,?)"$;

$4.$

$5.$ $stmt $=$ $pdo$->$prepare$($$sql$)$;

$6.$ $stmt$->$bindValue$(1,$ $$\_$POST$["$lastName$"])$;

$7.$ $stmt$->$bindValue$(2,$ $$\_$POST$["$firstName$"])$;

$8.$ $stmt$->$execute$()$;

$9.$

$10.$ echo "Teacher is added.";

Group of answer choices

$5$

$10$

$1$

$8$