Which of the following is not true about RStudio's project?

Select one:

a$.$ When an existing project is opened through the conversion of a project, the code that was previously working must be re$-$executed to continue the project.

b$.$ RStudio's project is a very convenient function for actual data analysis because it allows users to separate and manage work directories, workspaces, history, and source files independently for each analysis.

c$.$ On the upper right side of RStudio, there is a menu that shows the name of the current project, which lists the name of the recently opened project, and you can easily switch between projects by clicking the name of the project you want to open.

d$.$ When a project is created. A project file with an extension of Rproj is created, which contains various information related to the project.