This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
A child Ramu has swallowed the contents of two bottles of nasal decongestant is primary ingredient is alpha adrenergic receptor agonist drug. The sign of Alpha activation that may occur in this patient include 
Select and explain. 
A. Tachycardia, B. Dilation of pupil, C. Vasodilation, D. All the above
B: Dilation of pupil
Answer: B: Dilation of pupil 
Explanation: Ref-KDT 6/e p143 Stimulation of Alpha receptor cause mydrasis whereas tachycardia and vasodilation are due to activation of Beta adrenergic receptor