Available for individuals who do not participate in an employer-sponsored retirement plan

What of questions below NOT a valuable research question?

A. Which new product ideas would customers most likely purchase? B. How do customers rate our solutions against competing solutions? C. All of these are valuable research questions. D. How likely are our customers to recommend our solutions? E. What criteria do customers use when making purchase decisions?

The major current revenue source for social commerce vendors is advertising

Indicate whether the statement is true or false