Darnell is planning to rent a booth at a trade show specifically for veterinarians. Darnell's company offers benefits like discounts on supplies, access to group health insurance, and other resources for self-employed veterinarians. Judging by the number of veterinarians who are self-employed, what number of attendees at the trade show would most likely be interested in Darnell's booth? A. 1 in 3 B. 1 in 10 C. 1 in 4 D. 1 in 6