which series of programs and/or scripts would most closely describethe start-up process?

When you start XWindows, which series of programs and/or scripts would most closely describe
the start-up process?

A.
xdm –> xinit –> xinitrc –> Xclients

B.
kde –> xinitrc –> xinit –> Xclients

C.
startx –> xinitrc –> Xclients –> kde

D.
startx –> xinit –> xinitrc –> Xclients

E.
startx–>xinit–>Xclients–>xinitrc