Can we assign access modifiers to Inteface method singnatures

In this tip we will see, can we assign access modifiers(Public/Private/Protected/internal/Protected Internal))  to Interface method signatures.

    public /internal interface Itest

    {

        protected int ProtectedMethod(); //Compile Error

        internal int internalMethod();//Compile Error

        private int privateMethod();//Compile Error

        protected internal int ProtectedInternalMethod();//Compile Error

        public int publicMethod();//Compile Error

    }

when we try to add any of access modifiers to interface methods we will get compile time error as "The modifier 'public/protected/private/internal ' is not valid for this item". Even we can not assign a public modifier to methods.

But we can add Public/internal modifiers for an interface name.