How many user interfaces does YaST have?

How many user interfaces does YaST have?

• 4
• 2
• 5
• 3

EXPLANATION

A feature of YaST is that it contains both Graphical user interface (GUI) and Text-based user interface (TUI) (with ncurses)
front ends. This is especially useful for non-GUI installations such as servers, for system administration over slow Internet connections, and for when one is unable to boot into a graphical X server but still requires an advanced user interface to the package manager (for example, a novice user trying to downgrade an Xorg package to fix a graphical installation).