When importing a file in R using the "Import Dataset" interface, what are the $2$ most important sections to look for and why?

A$)$ Data Preview and Import Options because they give you the most options to choose to correctly import your data.

B$)$ "Name" and "Sheet" in the Import Options

C$)$ File$/$URL and Code preview because that is the minimum steps to take to correctly import your data.

D$)$ Data Preview and the skip options