The mechanism of expectorant action of Thermopsis herb infusion is:
A). Irritates bronchial glands during excretion that leads to stimulation of their secretion.
B). Directly stimulates peristalsis of bronchial smooth muscles.
C). It destroys proteins of sputum.
D). It stimulates bronchial secretion reflexively irritating the stomach receptors.
E). It inhibits the cough center.