What is the output of the following code?
```php
class A {
public $a = 1;
public function __construct($a) { $this-a = $a; }
public function mul() {
return function ($x) {
return $this-a*$x;
};
}
}
$a = new A(2);
$a_mul = $a-mul();
$m = $a-mul();
echo $m(3);
```

Question

What is the output of the following code?
```php
class A {
 public $a = 1;
 public function __construct($a) { $this->a = $a; }
 public function mul() {
 return function ($x) {
 return $this->a*$x;
 };
 }
}
$a = new A(2);
$a_mul = $a->mul();
$m = $a->mul();
echo $m(3);
```

Accepted Answer

B. 6

Answer

A. 9

Answer

C. 0

Answer

D. 3

What is the output of the following code? ``php class A { public $a = 1; public function __construct($a) { $this->a = $a; } public function mul() { return function ($x) { return $this->a*$x; }; } } $a

Question

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