Please choose the correct solution to the question: How to wash a dog.

Solution1: 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.

Solution2: 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 format: solution1/solution2