Which statement about the following Python code is correct?

import os

folder $=$ input$("$Enter a folder name: $")$

all$\_$files $=$ os$.$listdir$($folder$)$

for file in all$\_$files:

file$\_$path $=$ os$.$path.join$($folder$,$ file$)$

if os$.$path.isdir$($file$\_$path$)$:

print$($file$\_$path$)$

It will raise an exception if the folder input by the user is empty.

It will display True for each item in the folder input by the user that is a directory and False for each item that is not.

It will display the names of any subfolders found within the folder input by the user.

It will display the names of any files found within the folder input by the user.