How to correctly display the dependency of two classes on a UML diagram?

Question

OOP

Hello, there are basic concepts of building UML diagrams, but I stumbled when creating a class diagram. The essence of the question is class A, it has two functions foo, foo2. There is also a class B, in the constructor of which we specify the parent.
foo and foo2 methods look like this:

foo(){
    B *bar = new B(this);
    ...
    return;
}
foo2(){
    B *bar = new B(this);
    ...
    return;
}

Question: which of the three diagrams is closer to the truth?