Quite often a student in your class disturbs your teaching by demanding clarifications in what you have said. You know that they are useful questions and the answers will benefit most of the students. How would you react to the situation?
ADiscourage him by making fun of him
BAsk him not to disturb the class while teaching
CMake use of his question to clarify the points you have over- looked
DAsk him to meet you in private and get the doubts cleared