How to intepret output from gcc fdump-class-hierarchy option

I have a simple class and wanted to study how it is organized into memory.
How can I interpret the following which was produced by using -fdump-class-hierarchy option in gcc.

Basically, I want to know where the vptr will be located in relation to the array for example.

Vtable for A
A::_ZTV1A: 3u entries
0     (int (*)(...))0
4     (int (*)(...))(& _ZTI1A)
8     A::SendCommand

Class A
   size=48 align=4
   base size=48 base align=4
A (0x223a600) 0
    vptr=((& A::_ZTV1A) + 8u)

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class A
{
	public:
		A() { cout << "A's Constructor" << endl; };
		virtual void SendCommand(){};
		void setArray()
		{
			for(int i =0; i < 10; i++ )
			{
				m_array[i] = 'A';
			};
		};
	private:
		int m_a;
		int m_array[MAX_ARRAY];
};

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