premise: An economics department is assigning six teaching assistants—Ramos, Smith, Taj, Vogel, Yi, and Zane—to three courses—Labor, Markets, and Pricing. Each assistant will be assigned to exactly one course, and each course will have at least one assistant assigned to it. The assignment of assistants to courses is subject to the following conditions: Markets must have exactly two assistants assigned to it. Smith and Taj must be assigned to the same course as each other. Vogel and Yi cannot be assigned to the same course as each other. Yi and Zane must both be assigned to Pricing if either one of them is. Which one of the following could be the complete assignment of assistants to Pricing?
hypothesis: Vogel, Yi, and Zane