Chronic obstructive pulmonary disease or COPD is a collection of lung diseases that cause breathing problems and obstruct airflow. This group of diseases can include refractory (severe) asthma, emphysema and chronic bronchitis. Which of the following is/are NOT considered its symptoms?

A. chest tightness and chronic cough
B. weight loss
C. shortness of breath and wheezing
D. none of the above​