The correct answer is A. knitr.
knitr is a document preparation system for dynamic documents. It can be used to create documents that include both text and code, and that can be easily updated as the code changes. knitr is based on the R programming language, and it can be used to create documents in a variety of formats, including HTML, PDF, and markdown.
ggplot2 is a plotting package for the R programming language. It is used to create publication-quality graphics. ggplot2 is based on the grammar of graphics, which is a declarative language for describing statistical graphics.
NumPy is a numerical Python package. It provides a high-performance multidimensional array object, as well as a variety of functions for working with arrays. NumPy is used by many scientific and engineering applications.
None of the mentioned is not the correct answer.