Major types of Alpine vegetation is classified into the:

A.Alpine scrub type consisting of moist decidous Apline scrub, dry sone alpine scrub, moist Alpine pasture, dry Alpine plateau pastures, dwarf juniper scrub, and dwarf Rhododendron scrub forest
B.Most Alpine scrub comprises dry alpine scrub and moist alpine scrub
C.Alpine forests contain Alpine fir birch forest, Rhododendron forest and high level bluepine forests
D.All of the above