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
Sampling error is classified as: 
Select and explain. 
A. Alpha error, B. Beta error, C. Gamma error, D. Alpha error and Beta error
D: Alpha error and Beta error
Answer: D: Alpha error and Beta error 
Explanation: Sampling error is a type of variation between one sample to another. Due chance and concern either incorrect acceptance or rejection of null hypothesis. Sampling errors arises because it is based on a pa and not on the whole. There are two types of sampling errors Type I or alpha error and type II or beta error. The question is not specific, as it does not mention sampling error type I or type II we choose both alpha and delta. Ref: Biostatistics By I.Saha and B. Paul, Page 74 ; Park's Textbook of Preventive and Social Medicine By K.Park, 18th Edition, Page 648