Yahoo bulk vs spam

Hello,
Not sure I understand where email marked as “spam” goes. Yahoo mail provider has a folder called Spam, which I’m not able to see in the folder picker in the app.
Folder picker showing Bulk, but I don’t see bulk folder on my yahoo account when I view in browser. So where is spam located?

Thanks

According to this Thunderbird support article, you will need to set the Bulk folder as your spam folder in K-9 Mail. It appears like the folder is named Spam in the web interface.

https://support.mozilla.org/en-US/questions/1095179