Class 6A were collecting information to make a graph on the pets owned by the class.
Rabbits were owned by Darren, William, Sita, Jane and Phil.
Sita, Brett, Jane and Sven all had goldfish. All those owned a goldfish also had a cat, except Sven. William and Daren also had a dog. Sandy, William and Brett each had a gerbil. Phil and Sita had a tortoise.
Which two children only have one pet each?

• Sandy and Sven
• Sandy and Sita
• Swen and Phil