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Which of the following statements is true?

I. A well-designed survey asks questions using the same wording for all of its subjects.

II. A well-designed survey uses volunteers to make sure that the survey is not an inconvenience for respondents.

III. A well-designed survey does not need to use a sample that is representative of the intended population as long as the sample size is large enough.

A

I only.

B

II only.

C

III only.

D

I and III only.

E

II and III only.

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