What will the following code print when creating an instance of class X:

#include <iostream>
using namespace std;

class Y {
  public:
    Y() { cout << "Y"; }
};
class Z {
  public:
    Z() { cout << "Z"; }
};
class X : public Z {
  private:
    Y m_objY;
  public:
    X() { cout << "X"; }
};