Signs and symptoms of an allergy attack include which of the following?

(A) Wheezing occurs during expiration when air movement is impaired because of constricted edematous bronchial lumina. (B) Respirations are difficult, but the rate is frequently normal. (C) The circumoral area is usually pale. Cyanosis is not an early sign of hypoxia. (D) Expiration is prolonged because the alveoli are greatly distended and air trapping occurs.