foreach $($var node in cars. Elements$("$carType$").$ Elements$("$car$"))$

if $($node$.$ Value $==$ "Automatic"$)N++$;

MessageBox.Show$("$The number of Automatic cars in the list is: $"+N)$;

$$

private void NumberofAutoCars$\_$Click$($object sender$,$ EventArgs e$)$

$1$

XElement cars $=$ XElement.Load$($@$"../../../$cars$.$xml$")$;

int $N=0$;

foreach $($var node in cars. Elements$("$carType$").$ Elements$("$car$"))$

if $($node$==$ "Automatic"$)N++$;

MessageBox.Show$("$The number of Automatic cars in the list is: $"+$N$)$;

$\}$

private void NumberOfAutoCars$\_$Click$($object sender$,$ EventArgs e$)$

$1$

XElement cars $=$ XElement.Load$($@$"../../../$cars$.$xml$")$;

int $N=0$;

foreach $($var node in cars.Elements$("$car$").$Elements$("$carType$"))$

if $($node$.$ Value $==$ "Automatic"$)$ N$++$;

MessageBox. Show$("$The number of Automatic cars in the list is: $"+N)$;

$\}$

private void NumberOfAutoCars$\_$Click$($object sender$,$ EventArgs e$)$

$1$

XElement cars $=$ XElement.Load$($@$"../../../$cars$.$xml$")$;

int $N=0$;

foreach $($var node in cars.Elements$("$car$").$ Elements$("$carType$"))$

if $($ node $="$Au

Q$3.$ Which of the following Code slices adds string "Hello" to the end of file? $($Suppose that the path of file has been already assigned to path$).$

using $($StreamWriter sw $=$ File. AppendText$($path$))$

using $($StreamWriter sw $=$ File.OpenWrite$($path$))$

using $($StreamWriter sw $=$ File.CreateText$($path$))$

using $($StreamWriter sw $=$ File.OpenText$($path$))$

sw$.$ Write$($text$)$;

sw$.$Write$($text$)$;

sw$.$Write$($text$)$;

sw$.$ Write$($text$)$;