What will be the output of the following C++ code?

#include<iostream> 
using namespace std; 
class Base { 
public: 
	Base()	 
	{ cout<<"Constructing Base \n"; } 
	virtual~Base() 
	{ cout<<"Destructing Base \n"; }	 
}; 
class Derived: public Base { 
public: 
	Derived()	 
	{ cout<<"Constructing Derived \n"; } 
	~Derived() 
	{ cout<<"Destructing Derived \n"; } 
}; 
 
int main(void) 
{ 
	Derived *d = new Derived(); 
	Base *b = d; 
	delete b; 
	return 0; 
}

A. Constructing Base
Constructing Derived
Destructing Base

B. Constructing Base
Constructing Derived
Destructing Derived
Destructing Base

C. Constructing Base
Constructing Derived
Destructing Base
Destructing Derived

D. Constructing Derived
Constructing Base
Destructing Base
Destructing Derived

Answer: Option B