If you have an existing package that doesn t have an .Rproj file, you can use devtools for the use_rstudio( _____/to/package ) to add it.

If you have an existing package that doesn t have an .Rproj file, you

1.	If you have an existing package that doesn t have an .Rproj file, you can use devtools for the use_rstudio( _____/to/package ) to add it.
A.	Path
B.	Package
C.	Function
D.	Class
Answer» B. Package