What is not correct about Embedded Style Sheets ?

एंबेडेड स्टाइल चादरें के बारे में क्या सही नहीं है?

Embedded style sheets enable to embed an entire CSS document in an XHTML document’s head section

Class Selectors are used in Embedded Style sheets

The style element’s type attribute specifies the Multipurpose Internet Mail Extensions (MIME) type that describes a file’s content

All the statements are correct

Explanation: