When browseable = no is set in the [homes] section of smb.conf, it prevents the share from appearing in the list of available shares when users browse the server. However, users can still access their home directories if they specify the correct UNC path directly.
A . When browsing the Samba server, there is no visible share named after the current user.
The share will not appear in the list of shares visible to the user during browsing.
D . The homes share can be directly accessed by specifically opening this share by its UNC path.
Users can still access the share by directly typing the path in the form \\servername\username.
Reference:
Samba Official Documentation - Home Directories