Identify any potential sources of bias in the following study.

An exit poll designed to predict the winner of a local election uses interviews with every Democratwho votes between 7 : 00 and 7:30 a.m. What sources ofbias, ifany, might this studyhave?

A. Participation bias only

B. Selectionbiasonly

C. Bothselectionandparticipationbias

D. There is probably no bias in the study