[单选题]
The photograph below s-- ix*a5qxlf;ptg,rsn,w h 4whows lungs that have undergone exg2d;lxblz q.) (3xk dvcessive breakdown of alveoli by protein-digesting enzymes (part on the left) compared to normal lung tissue (onvl ;.kdqlb3 (d)zxx g2 the right).
Which of the following are not symptoms of the lung condition pictured above?
A. Coughing up blood
B. Fatigue
C. Shortness of breath
D. Persistent cough
