通过删除基类来破坏派生类

#include <iostream>

class A
{
public:
    A() { std::cout << "A created!" << std::endl; }
    ~A() { std::cout << "A destroyed!" << std::endl; }

    virtual const char* Name() { return "A"; }
};

class B : public A
{
public:
    B() { std::cout << "B created!" << std::endl; }
    ~B() { std::cout << "B destroyed!" << std::endl; }

    const char* Name() { return "B"; }
};

int main()
{
    A* a = new B();

    std::cout << a->Name() << "\n";

    delete a;

    return 0;
}

我希望B被摧毁,而A也被摧毁。这在它的析构函数中是可能的还是我必须实现一个virtual Destroy()方法或类似的东西?