At the ITCZ __________

At the ITCZ __________.

A) air descends to the surface creating a high pressure belt
B) descending air collides with ascending air creating an unstable air interface
C) air ascends from the surface to the tropopause and flows poleward
D) air ascends from the upper atmosphere where it meets ionized air which is descending from the troposphere
E) descending air,from the upper atmosphere,meets ionized air creating a high pressure belt