Hi, how would I go about answering this?

You conduct a study to better understand how a new children's toy is viewed by adult customers. To carry out this study, you send researchers to 500 toy stores across the country. During the span of a single day, you ask them to survey as many adult customers as possible about the new toy, which results in scores being tracked for several thousand customers. Based on the characteristics of this study, the data you collected show evidence of both and A. volume; accessibility B. variety; velocity O C. volume; velocity O D. variety; veracity