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: Unknown
True statement about standard normal curve: 
Select and explain. 
A. Equal distribution on either side of the curve, B. The total area under the curve is 2, C. Its mean is 1, D. Standard deviation is 0
A: Equal distribution on either side of the curve
Answer: A: Equal distribution on either side of the curve 
Explanation: (Refer: K. Park’s Textbook of Preventive and Social medicine, 24th edition, pg no:886 )
Normal distribution

Gaussian / Standard distribution
Symmetric with respect to same mean, median & mode & frequencies tapers off rapidly and symmetrically on both sides