Which Statement Is Incorrect

Which statement is incorrect?

A) Alveoli are the site of gas exchange in the lungs.
B) Interdependence of alveoli refers to air flow between adjacent alveoli through the pores of Kohn.
C) Alveolar Type II cells secrete pulmonary surfactant.
D) Alveoli are very thin and are surrounded by a network of capillaries so that air and blood are separated by a very thin barrier.
E) The alveoli are thin-walled, inflatable, grape-like sacs at the end of the bronchioles.