Choose the correct way to call subroutine fun() of the sample class?

• A. delegate void del(int i);x s = new x();del d = new del(ref s.x);d(8, 2.2f);
• B. delegate void del(int p, double k);del d;x s = new x();d = new del(ref s.x);d(8, 2.2f);
• C. x s = new x();delegate void d = new del(ref x);d(8, 2.2f);
• D. all of the mentioned