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: Dental
P value is 0.001 then: 
Select and explain. 
A. Results are true of 99.9% of population., B. Test is not significant., C. 1% of significance., D. There is no co relation.
A: Results are true of 99.9% of population.
Answer: A: Results are true of 99.9% of population. 
Explanation: The 'P' value is the estimated probability of rejecting the null hypothesis of a study question when that hypothesis is true. If the computed P-value is less than 0.05 then we can reject null hypothesis. If the computed P-value is > 0.05, it means that the estimates of association are not significant and the null hypothesis is not rejected. P value of < 0.001 simply means there is less than 1 in a 1000 chance of the stated result being incorrect and the results are correct in remaining 999 or 99.9% of population.