A question regarding two dimenional array

[LarryChen]

Here is the code,

class A
{
     public:
        A()
        {
             static  int a[][3] = {1,2,3,4,5,6,7,8,9};
             int* b[3] = {a[0], a[1], a[2]};
             data = &b[0];
        }
     private:
        int** data;
};

Unfortunately, data doesn't point to two-dimensional array a and actually points to garbage. I wonder why?