Idea of advertising efficiency initial come to prominence in the ? A . 1991 B. 1990 C. 1997 D. 1995

I totally agree with the opinion Dear colleagues to answer and chose No. B

and thank you for inviting us

the correct answer is B

regards

Thanks for invitation ..................... my answer is B

Thank you for the invitation

I think its in 1990`s.

Thank you for invocation

I tend to answer B......

option (b) seems to be correct answer

Sorry , I do not know , nevertheless thanks for the invite.

Thanks for the invitation. My answer is B

Thanks for invitation,

Agree with colleagues that the correct answer is "B".

_________B- 1990

_______Thanks for invitation