Which of the following tool documentation language is supported by knitr?

LaTeX is a document preparation system that is used to create high-quality documents. It is a powerful tool that can be used to create complex documents with a variety of features. However, it is a complex system that can be difficult to learn.

HTML is a markup language that is used to create web pages. It is a simple language that is easy to learn and use. However, it is not a good language for creating complex documents.

D is not a valid option.