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
A radomized trial comparing the efficiancy of two drugs showed a difference between the two with a p value of < 0.005. In reality, however drugs do not differ. This is an example of ? 
Select and explain. 
A. Type 1 error (alpha error), B. Type III error (Beta error), C. 1-a, D. 13-Jan
A: Type 1 error (alpha error)
Answer: A: Type 1 error (alpha error) 
Explanation: Ans. 'a' i.e., Type I error (alpha error) Drugs showed a difference which is not true in reality --> false positive result. False positive difference is due to type I error.