This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Atropine can cause: 
Select and explain. 
A. Decreased cardiac output, B. Heart block, C. Hypertension, D. Mydriasis
D: Mydriasis
Answer: D: Mydriasis 
Explanation: Atropine is an anticholinergic drug. It causes increased heart rate.
Atropine causes mydriasis and decreased sweating.
No consistent or marked effect on BP, though hypotension may occur due to histamine-release and direct vasodilator action (at high dose); tachycardia and vasomotor centre stimulation tend to rise BP.