Which statement best describes the effects that stress has on the immune system?

The answer is stress can lead to increased vulnerability to infections and immune deficiency disorders. This may influence the soundness of stomach related framework and cause ulcers. Adrenaline discharged amid an anxiety reaction may likewise bring about ulcers. Push reactions increment strain upon circulatory framework because of expanded heart rate and so on. Stress can likewise influence the safe framework by raising pulse.

The correct answer from EDGENUITY is 
A. Stress can lead to increased vulnerability to infections and immune deficiency disorders.
Cause I just took the test

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