Use the following data model for this question:

Animal

animal$\_$id

name

Adopter

adopter$\_$id

name

Animal$\_$Adopter

animal$\_$adopter$\_$id

animal$\_$id

adopter$\_$id

Which of the following is a situation where an OUTER JOIN could be useful?

a$.)$

When a pet adoption agency wants to see all animals, including those that have been adopted and those that haven't

b$.)$

When a pet adoption agency wants to see only animals that have NOT been adopted

c$.)$

When a pet adoption agency wants to see all people who have adopted animals from the agency

d$.)$

When a pet adoption agency wants to see only animals that have been adopted