Which of the Following Statements Is True of References

Which of the following statements is true of references?

A) References help in screening up to 15% of applicants that have applied for a vacancy.
B) References provide an insight about how hard potential employees will work.
C) References provide information about the employee's history and personal health.
D) References are a good way to verify information given on an application form.
E) References involve detailed interviews with the applicant.