"B" is correct! And there are a few more points to remember about serving a customer with a service animal:
- Speak directly to your customer and don't treat the animal as a pet.
- Avoid touching or talking to service animals — they're working and have to stay focused.
- Avoid making assumptions about the animal. Not all service animals wear special collars or harnesses. If you're not sure whether the animal is a pet or a service animal, just ask your customer. You can ask for a letter verifying that it is a service animal. Normally, you can tell.