Part of Olson's Law of Large Groups Is the Argument

Part of Olson's law of large groups is the argument that

A) the larger the potential group,the less likely potential members are to contribute.
B) the larger the potential group,the more likely potential members are to contribute.
C) potential group size does not have any measurable effect on the willingness of potential members to contribute.
D) an actual group and a potential group are virtually the same when it comes to effectiveness.
E) the smaller the group,the less likely the potential members are to contribute.