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
The relationship of mean height of two groups of children is best studied by - 
Select and explain. 
A. Student's t-test, B. Linear regression, C. Chi-square test, D. Test of proportions
A: Student's t-test
Answer: A: Student's t-test 
Explanation: None