How to set the zoom of the browser with CSS

Question

Which of the following statements is/are true when this attribute `meta name="viewport"` is read by an *iPhone*?:
```css
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
```

Accepted Answer

This rule affects the browser zoom

Answer

There is no need for this tag, the *iPhone* Safari browser recognizes a mobile site or not by itself

Answer

This rule allows you to zoom in and out with your fingers

Answer

Only *iPhones* understand the `meta name="viewport"` tag

Question from the HTML5/CSS3 test

How to set the zoom of the browser with CSS