Complete the following code:

 private $x;

 public function __construct($x){

            $this->______=______

}

The reason for using the statement "include_once" is:

A class that has a function that take parameter an object from another class relation is called

The method of which class is called in the example below?

class A {

public void method() {...};

}

class B extends A {

public void method() {...};

}

class C extends B {

public void method() {...};

}

A obj = new C();

((B)obj).method();

In Figure 2, the relation between Question and Answer must be converted to_____

Given the Figure, The relation between Group and user must be fixed to

In Figure 2, the relation between Professor and student is _____

In the below use case diagram, the relation between Deposit Funds and Update Balance, should be ________

In the below use case diagram, the relation between Deposit Funds and Calculate Bonus, should be ________