Which of the following is the correct way to call the subroutine function abc() of the given class csharp given below? class csharp { void abc() { console.writeline("A:Just do it!"); } }

• A. csharp c = new csharp(); delegate void d = new del(ref abc); d();
• B. delegate void del(); del d; csharp s = new csharp(); d = new del(ref s.abc); d();
• C. csharp s = new csharp(); delegate void del = new delegate(ref abc); del();
• D. None of the mentioned