2. (a) Patients with asthma should not be prescribed beta-blockers (beta-adrenoceptorantagonists) such as propranolol, due to the risk of bronchospasm. Which ONE of thefollowing statements is TRUE? (1 mark) a.

Propranolol decreases CAMP in airway smooth muscle cells b. Propranolol increases CAMP in airway smooth muscle cells C.Propranolol decreases calcium in airway smooth muscle cells d. Propranolol increases calcium in airway smooth muscle cells e. Propranolol increases IP3 in airway smooth muscle cells f. Propranolol decreases IP3 in airway smooth muscle cells