Who presented the Concept of Quality?

The one you indicated in your question..... :-P

 Thanks for invitation ..................... my answer is D

the correct answer is D

regards

................................................................... D

Thanks for invitation,

I do believe that the correct answer is "D".

d. Prof.Edward Deming

Thanks.

My answer is for option (D)

thanks for the invite.

It could be Edward Deming , I am not so sure.

Thanks 

IT is D...........

Regards