The project you imported for this assessment came with multiple tags. What does running the following code snippet do$?$

proj$\_$metadata $=$ project.get$\_$metadata$()$

proj$\_$metadata$[\text{'}$tags$\text{'}]=[\text{'}$Certification Exam'$]$

project.set$\_$metadata$($proj$\_$metadata$)$

It adds a new tag $$Certification Exam$$ to the existing group of project tags.

It replaces any project tags with one tag $$Certification Exam$.$

It creates a new tag $$Certification Exam$$ available for use on the instance, but does not assign it anywhere.

Nothing. The second line should say $$tag$$ instead of $$tags$.$