Which of the Following Is True About Internet-Based Survey Research

Which of the following is true about Internet-based survey research?

A) The effectiveness of Internet-based survey research is invariably affected by the interviewer's bias.
B) Internet-based survey research is less flexible compared to mail questionnaires.
C) Internet-based survey research is characterized by high speed and low costs.
D) Typically, the quantity of data gathered in Internet-based survey research is low.
E) The response rate of Internet-based survey research is lower than that of mail questionnaires.