Match the parametric equations with the verbal descriptions of the surfaces by putting the letter of the verbal descriptio to the left of the letter of the parametric equation. 1. r (u, v) = u cos vi + u sin vj + u²k 2. r (u, v) = ui + cos vj + sin vk 3. r (u, v) = ui + vj + (2u − 3v) k 4. r (u, v) = ui + u cos vj + u sin uk A. plane B. circular paraboloid C. cone D. circular cylinder