Finish the following sentence with the best choice: How to wash a dog.

Choices:
- Wet the dog with warm water, apply shampoo, lather and massage into fur, no need to rinse out all shampoo. Repeat process with conditioner if desired.
- Wet the dog with warm water, apply shampoo, lather and massage into fur, thoroughly rinse out all shampoo. Repeat process with conditioner if desired.

Answer:
Wet the dog with warm water, apply shampoo, lather and massage into fur, thoroughly rinse out all shampoo. Repeat process with conditioner if desired.