What is the "three concavities sign"?

Options:
A. The narrowing and obstruction of the larynx, trachea and bronchial tubes caused by wind-cold leads to extreme relaxation of the respiratory muscles, reduction of negative pressure in the chest cavity, and obvious depression of the suprasternal fossa of the sternum, the supraclavicular fossa, and the intercostal space during inhalation, which is known as the "three-concave sign".
B. The narrowing and obstruction of the larynx, trachea and bronchial tubes caused by wind-cold leads to extreme exertion of the respiratory muscles, reduced negative pressure in the chest cavity, and obvious depression of the suprasternal fossa of the sternum, the supraclavicular fossa, and the intercostal space during inhalation, which is known as the "triple-concave sign".
C. The narrowing and obstruction of the larynx, trachea, and bronchial tubes caused by cold leads to extreme exertion of the respiratory muscles, reduced negative pressure in the chest cavity, and obvious depression of the suprasternal fossa of the sternum, supraclavicular fossa, and the intercostal space during inhalation, which is known as the "triple-concave sign".
D. The narrowing and obstruction of the larynx, trachea, and bronchi caused by external pressure leads to extreme relaxation of the respiratory muscles, increased negative pressure in the chest cavity, and obvious depression of the suprasternal fossa, supraclavicular fossa, and the intercostal space during inhalation, which is known as the "triple-concave sign".
E. The narrowing and obstruction of the larynx, trachea, and bronchial tubes due to various reasons leads to extreme exertion of the respiratory muscles, increased negative pressure in the chest cavity, and obvious depression of the suprasternal fossa of the sternum, supraclavicular fossa, and the intercostal space during inhalation, which is known as the "triple-concave sign".
F. The narrowing and obstruction of the larynx, trachea, and bronchi caused by external pressure leads to extreme relaxation of the respiratory muscles, reduced negative pressure in the chest cavity, and obvious depression of the suprasternal fossa, supraclavicular fossa, and the intercostal space during inhalation, which is known as the "triple-concave sign".
G. The narrowing and obstruction of the larynx, trachea and bronchial tubes caused by cold leads to extreme relaxation of the respiratory muscles, reduced negative pressure in the chest cavity, and obvious depression of the suprasternal fossa of the sternum, the supraclavicular fossa, and the intercostal space during inhalation, which is known as the "three-concave sign".
H. The narrowing and obstruction of the larynx, trachea and bronchi caused by dampness and heat leads to extreme exertion of the respiratory muscles, reduced negative pressure in the chest cavity, and obvious depression of the suprasternal fossa, supraclavicular fossa, and the intercostal space during inhalation, which is known as the "three-concave sign".
I. The narrowing and obstruction of the larynx, trachea and bronchial tubes caused by dryness and heat lead to extreme exertion of the respiratory muscles, reduction of negative pressure in the thoracic cavity, and obvious depression of the suprasternal fossa of the sternum, the supraclavicular fossa, and the intercostal space during inhalation, which is known as the "three-concave sign".
J. The narrowing and obstruction of the larynx, trachea and bronchial tubes caused by cold leads to extreme relaxation of the respiratory muscles, increased negative pressure in the thoracic cavity, and obvious depression of the suprasternal fossa, supraclavicular fossa, and the intercostal space during inhalation, which is known as the "triple-concave sign".
Answer: E