Which of the Following Are ALL Advantages of Using Web-Based

Which of the following are ALL advantages of using web-based surveys?

A) increased access to some specially targeted populations;less self-report bias than mail-out questionnaires
B) less self-report bias than mail-out questionnaires;more control over who is able to fill out the questionnaire
C) increased numbers of people can be recruited than in traditional surveys;increased access to some specially targeted populations
D) increased numbers of people can be recruited than in traditional surveys;more control over who is able to fill out the questionnaire