What is one method to gain control of a dog's head when stacking?

• A. Hold the dog's lower jaw and cheek on the side closest to you without wrapping your fingers around the muzzle.
• B. Grab the leash and pull upward.
• C. Use gentle nudges on the neck.
• D. Make sure the show lead is snug behind the dog's ears, holding it taut and close to the neck.

Answer: (D)