Which of the following can NOT determine the reliability of a house-sitter？A．The candidate

Which of the following can NOT determine the reliability of a house-sitter？

A．The candidate has to fill out an application.

B．The candidate has to interview with the homeowners.

C．The candidate has to provide three references.

D．The candidate has to offer his work record.

请帮忙给出正确答案和分析，谢谢！