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: Social & Preventive Medicine
Regarding the normal curve, true is/are- 
Select and explain. 
A. Both limbs of the curve touch the baseline, B. Curve is bilaterally symmetrical, C. There is a skew to the right, D. There is a skew to the left
B: Curve is bilaterally symmetrical
Answer: B: Curve is bilaterally symmetrical 
Explanation: Ans. is 'b' i.e., Curve is bilaterally symmetrical o Confidence limit of normal curve can never be 100%; therefore, limbs of curve never touch the baseline. o Mean, Median and mode all coincide --> No skew.