Which of the Following Is Not Appropriate for Use as a Sampling

Which of the following is not appropriate for use as a sampling frame?

A) telephone directories when you wish to sample attitudes toward a new law
B) lists of licensed drivers when you wish to ask juveniles their opinions about drinking prohibitions
C) taxpayer rolls when the researcher is interested in public concerns about school appropriations in their community
D) AMA membership lists to survey doctors about their attitudes concerning HMO's