// CS0121: The call is ambiguous between the following methods or properties: `IA.Foo()' and `IB.Foo()'// Line: 27interface IA
{voidFoo();}interface IBB : IB
{}interface IB
{intFoo();}interface IC : IA, IBB
{}public class Program
{static voidMain(){
IC i =null;
i.Foo();}}