Infrastructure Factors Influence Data Collection Methods

Infrastructure factors influence data collection methods. Which of the following is a false statement regarding international data collection.

A) Using the telephone book as the sampling frame is problematic because it restricts the sample to landline subscribers, who are likely to differ from the target population.
B) Saudi Arabia's efficient mail systems encourage the use of mail surveys over phone surveys.
C) Because most subscribers in low-income countries do not have to pay for phone calls they receive, telephone interviewing is much easier than in the past.
D) All of the above are true.