#include $EE=$vol;$s1(20)s2(40)(s1s2)<mi\; id="EditorElement\_8902419"></mi><mi\; id="EditorElement\_8902303">/</mi><mi\; id="EditorElement\_8902304">/</mi>$ Copy Constructor

Hello: :Hello$($const Hello& other$)\{$

data $=$ new int $4$;

$\}$

$//$ User define constructor

Hello::Hello$($int$*$ other$)\{$

data $=$ other;

$\}$

$//$ Destructor

Hello:: Hello$()\{$delete$[]$ data; $\}$

int main$()\{$

Hello a;

Hello $b=a$;$\frac{,}{\frac{?}{?}}$ Statement $x$

return $0$ ;

$\}$

a$.$ No errors.

b$.$ Yes there is an error, the source of the error is the copy constructor.

c$.$ Yes there is an error, the source of error is the statement $x.$

d$.$ Yes there is an error, the source of the error is the user define constructor.

e$.$ Yes there is an error, the source of error is the destructor.Which of the following implementations A and $B$ are used to count the internal nodes in a binary tree? An In

Time

node that has at least one child.

$\frac{\frac{?}{?}}{A}$

int countInternal$($Node$*$ root$)\{$

if root $==$ nullptr $||$ root $$ left $==$ nullptr && root$->$right $==$ nullptr