Is it possible to call instantiated static methods in other class in php?

Is it possible to call static methods using Class Instance in the extending classes? I don't know to get the $this->access from parent __construct() all through my classes when extending it so maybe an expert in PHP could help me.

namespace Folder\Subfolder;

class ClassA {  // <-- this class is a custom helper

  public static function accessA() {
    return 'Class A\'s Access';
  }

  public static function accessB() {
    return 'Class B\'s Access';
  }

}

In other file:

use Folder\SubFolder\ClassA;

class ParentClass {

  public function __construct() {
    $this->access = new \Folder\Subfolder\ClassA;
  }

  public function admin() {
   $ac = $this->access::accessA(); 

   //When I do this it gives me an error syntax error, unexpected '::' (T_PAAMAYIM_NEKUDOTAYIM)

   $ac = $this->access->accessA();

   //When I also do this it gives me an error Call to a member function accessA() on null

   var_dump($ac);
   exit;
  }
}

class ChildClass extends ParentsClass { 

 public function __construct() {
  parent::__construct();
 }

 public function employee() {
  $ac = $this->access::accessB();
  var_dump($ac);
  exit;
 }
}

class ChildClass2 extends ParentClass {
  public function __construct() {
   parent::__construct();
  }
} //And so on and so forth

NOTE: I don't want to instantiate another class object using new keyword. I want to use this code $this->access; only