Correct Option: B

<header> element contains navigation links. Slidebar is for hoverable/sliding text. <footer> is introduced in HTML5 which is present at the end of page and do contains footer information i.e copyright information. Main content is the entire article which wraps the <article> element. It holds the page’s main content. It can be useful for screen readers. E.g. <main> <article>…………</article> </main>