When you implement two interfaces with the same method, how do you know which one is called?

Question

If you have TheMethod() in interfaces I1 and I2, and the following class

class TheClass : I1, I2
{
    void TheMethod()
}

If s

Answer 1

That is irrelevant. Casting to any of the interfaces will result in the method being called, but since an interface cannot contain code you cannot inherit behavior from it.