Section $4\mathrm{.}3-$ MATH...

$...$

Consider the implementation of the following class

class person $\{$

private:

int age;

int getAge$()$;

void setName$($string$)$;

public:

string name;

person$($int$,$ string$)$;

person$($string$)$;

person$()$;

void setAge$($int$)$;

string getName$()$;

$\}$

How many constructors are in the person class above?

$1.$

$2$

$3$

$7$