Choose the correct item.
A: How long … \(Jane and Kate/be\) friends?
B: They … \(know\) each other for ten years and they … \(share\) a flat for the last four years.

• have Jane and Kate been; have known; have been sharing
• has Jane and Kate been; have known; have been sharing
• have Jane and Kate been; have knew; have been sharing
• have Jane and Kate been; have known; have been shared