An executive for a large company is considering a change to health insurance plans offered to the employees. To assess employee satisfaction with the current plan, the executive sends an email to all company employees asking their opinion of the current plan. A summary of the results received shows that 27% of company employees are "highly satisfied” with the current health insurance plan. Which statement about the results is most likely to be true? A. The results may suffer from undercoverage because the opinions of segments of employees may not be recorded.

B. The results provide an accurate representation of support because the opinion of all employees has been recorded.

C. The results may suffer from nonresponse bias because many satisfied employees may choose to not respond to the email survey.

D. The estimate of 27% for employee support of the health plan is likely accurate because all company employees were contacted via email.

(it's C)