What is a best design to hold a "global" mutable list?

Let's say that I have an ArrayList of class Person and I have two objects that are generated from two different classes which read and write to this ArrayList.

For example,

public class Main { 
   public static void main(String[] args) { 
       A a = new A();
       B b = new B();
   }
}

What, in your opinion is the best design to handle this ArrayList. I can think about two options:

1. create the Array List in class Main:

   public class Main { 
   
          public static ArrayList<Person> list = new ArrayList<>();
   
          public static void main(String[] args) { 
              A a = new A();
              B b = new B();
          }
   }
   
   

and then access the list inside classes A and B by:

Main.list....

2. Create the ArrayList as a local variable in main method and send to the constructor of A and B.

   public class Main {

          public static void main(String[] args) {
              ArrayList<Person> list = new ArrayList<>(); 
              A a = new A(list);
              B b = new B(list);
          }
   }