Interview question unsolved for long time...Plz help

Please help me with following questions

(Multiple choice)
No Points if all choices are not ticked

Code:

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****  Which of the following code fragments would trigger execution of the copy constructor of MyClass?

1. MyClass  X; MyClass  Y(X);

2. MyClass  X; MyClass  Y; X=Y;

3 MyClass  X; MyClass  Y=X;

4 MyClass  fn1()
{  static MyClass  X;
    return  X;
};
const MyClass & Y=fn1();

5 int fn1(MyClass  Y)
{ return  1;
};
int i; MyClass Z;
i=fn1(Z);


***  Which of the following is true about default COPY constructor?
(Multiple CHoice )

1 takes no arguments
2 exists for any class
3 performs a shallow copy
4 will be executed when one object is assigned to another
5 is compiler generated

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Ah, and this is an assignment of sorts? Questions you need to know the answer to?

> Please help me with following questions
You tell us which answers you think are correct, then we'll tell you if you're on the right track.