What is the output of the following code?
```php
class Number {
private $v = 0;
public function __construct($v) { $this-v = $v; }
public function mul() {
return function ($x) { return $this-v * $x; };
}
}
$one = new Number(1);
$two = new Number(2);
$double = $two-mul()-bindTo($one);
echo $double(5);
```

Question

What is the output of the following code?
```php
class Number {
 private $v = 0;
 public function __construct($v) { $this->v = $v; }
 public function mul() {
 return function ($x) { return $this->v * $x; };
 }
}
$one = new Number(1);
$two = new Number(2);
$double = $two->mul()->bindTo($one);
echo $double(5);
```

Accepted Answer

A. 5

Answer

B. C.

Answer

C.

Answer

D.

What is the output of the following code? ``php class Number { private $v = 0; public function __construct($v) { $this->v = $v; } public function mul() { return function ($x) { return $this->v * $x; }

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