Which of the Following Statements Is True of the Effectiveness

Which of the following statements is true of the effectiveness of nonmarket action?

A) The lower the number of members of an interest group, the greater is its potential effectiveness.
B) The greater the coverage by the members of an interest group, the less effective is its nonmarket action.
C) The costs of organizing interests are low when the costs of identifying and mobilizing those with common interests are high.
D) The greater the resources available to an interest group, the greater the set of activities that can be funded.