How to return the derived type from a template class

I want to be able to call makeAnother() this without providing a template argument. I've tried using different forms of decltype(this) both in and outside of the function body with no success.

#include <vector>

template <class T>
class A {
    template <class Derived>
    Derived makeAnother() {
        Derived result;
        /* do stuff */
        return result;
    }
    std::vector<T> v;
};

class B : A<int>
{
    /* stuff */
};

int main() {
    B foo;
    B result = foo.makeAnother(); // this doesn't work
}

via Chebli Mohamed