[单选题]
The photograph below shows lungs that have undergone excessive brealgc. hlb41*sp6 h07 oamm/foj kdown of andfp p. .ewt/5i v1yt8 67hlbalveoli by protein-digesting enzymes (part on the left) b167 8lyia.ppt. w/hv5t fen dcompared to normal lung tissue (on 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
