Activists rescue dogs in truck

A truck carrying more than 200 dogs was intercepted by a group of volunteers of the Small Animal Protection Association at a toll gate of an expressway in Xi'an, Shaanxi province. The truck drivers said they didn't own the dogs and were only responsible for delivery. The chaos resulted in a 9 hour standoff and one of the drivers stabbing herself and being sent to the hospital, and the dogs being given to the association, which will keep them at its facility until they find adoptive homes.

How many hours did the chaos result in?

A. A 6 hour standoff

B. An 8 hour standoff

C. A 9 hour standoff