Assertion (A): Teaching aids have to be considered as effective supplements to instruction.
Reason (R): They keep the students in good humour.
Choose the correct answer from the codes given below :
Codes :
(A) Both (A) and (R) are true and (R) is the correct explanation of (A).
(B) Both (A) and (R) are true, but (R) is not the correct explanation of (A).
(C) (A) is true, but (R) is false.
(D) (A) is false, but (R) is true.