InterviewBit Problems   CHOOSE3 : Unsolved

About the CHOOSE3 : Unsolved category (1)
Why option D i s incorrect (12)
How b is O( n/2)? (4)
Time complexity problem2 (2)
Bot explanation (3)
Explain Option C (5)
Regarding option 3 (2)
How option C is more accurate where both C and D is taking log(n) time (12)
Wouldn't C cause an infinite loop? (3)
Why option C is more efficient than B? (5)
Bug in this application (1)