This question: $1$ point$($s$)$ possible

A recent corporate survey indicated that companies that acknowledge the supply chain as a strategic asset achieve $70\%$ higher performance. The "Leaders" in the survey point to next$-$generation supply chains, which are fast, flexible, and responsive. They are more concerned with skills that separate a company from the crowd: $51\%$ say differentiating capabilities is the real key to success. What additional information would you want to know about the survey before you accepted the results of the study?

Select all that apply.

A$.$ What sampling design was used?

B$.$ What was the margin of error and sample size?

C$.$ What was the response rate?

D$.$ What was the population from which the sample was selected?

E$.$ What kinds of skills did the leaders specify?

F$.$ Who funded the study?