Which of the following are the characteristics of a seminar?
(a) It is a form of academic instruction.
(b) It involves questioning, discussion and debates.
(c) It involves large groups of individuals.
(d) It needs involvement of skilled persons.
Select the correct answer from the codes given below
(A) (b) and (c) (B) (b) and (d)
(C) (b), (c) and (d) (D) (a), (b) and (d)