Bor davrida iqlim keskin ozgarishi tufayli gulli osimliklarning kopayi

A) a - harakatlantiruvchi tanlanish; b - harakatlantiruvchi tanlanish
B) a - harakatlantiruvchi tanlanish; b - stabillashtiruvchi tanlanish
C) a - harakatlantiruvchi tanlanish; b - dizruptiv tanlanish
D) a - stabillashtiruvchi tanlanish; b - harakatlantiruvchi tanlanish