Which of the followings are White box Testing ?

A. Path Testing

B. Loop Testing

C. Regression Testing

D. Non functional Testing

White-box testing focuses on the internal structure and logic of the program.

• Path Testing checks different execution paths inside the program → White box
• Loop Testing checks loop structures and iterations → White box
• Regression Testing verifies that new changes do not break existing functionality → not white box specifically
• Non-functional testing tests performance, usability, etc. → not white box

Therefore, the correct options are A and B.