What Is the Purpose of Adaptive Optics

What is the purpose of adaptive optics?

A) to improve the angular resolution of telescopes in space
B) to eliminate the distorting effects of atmospheric turbulence for telescopes on the ground
C) to increase the collecting area of telescopes on the ground
D) to increase the magnification of telescopes on the ground
E) to allow several small telescopes to work together like a single larger telescope