Q.
Assertion (A) : Opinion polls and surveys are although valuable, are least preferred by PR persons.
Reason (R) : These are not expensive for routine public relations practice.
Codes :
[A] Both (A) and (R) are true.
[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.