Which of the Following Statements Is FALSE

Which of the following statements is FALSE?

A) Phagocytic cells within the lungs phagocytize carbon particles from inspired air.
B) The walls of the alveoli have a rich supply of lymphatic vessels.
C) The superficial and deep lymphatic vessels exit the lungs at the main bronchi.
D) The superficial lymphatic vessel drains lymph fluid from the superficial lung tissue and visceral pleura.
E) In older smokers,lung tissue can appear gray or black due to the accumulation of debris particles.