In the Literary Digest Poll Discussed in Your Text, the Poll

In the Literary Digest poll discussed in your text, the poll incorrectly indicated that Alf Landon would defeat Franklin Roosevelt in the upcoming election. In the real election, Roosevelt won in a landslide. The poll's inaccuracy was due to ______.

A) the fact that most respondents felt their privacy was being intruded upon by the poll and lied about how they intended to vote
B) the fact that the poll surveyed people over the phone, and at the time, only the wealthy had telephones
C) improper statistical methods used by the researchers to tabulate the results of the poll
D) the fact that the poll used vaguely worded questions that confused the respondents