Draw and explain the complete structure of an activation record with all components (return value, actual parameters, control link, access link, saved machine status, local data, temporaries).

Show the activation tree and activation record contents for the following code at the point when factorial(1) is executing:

int factorial(int n) {

    if (n <= 1)

        return 1;

    return n * factorial(n-1);

}

int main() {

    int x = factorial(3);

}