One Problem with Using Random Digit Dialing to Get a Representative

One problem with using random digit dialing to get a representative sample of households in a city is that

A) the method can only be used to get a sample for the whole country.
B) households with multiple telephones on the same line will be over-represented.
C) households with multiple phone numbers will be over-represented.
D) households with unlisted phone numbers will not be represented.

Correct Answer:

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