The Nonequivalent Comparison Group Design Begins with the Issue of Threats

The nonequivalent comparison group design begins with the issue of threats to internal validity. Which of the following is NOT correct.

A) Two groups are tested at two different time periods.
B) The experimental group does not serve as its own comparison group.
C) Two distinct groups are created: one group becomes the experimental group where individuals will participate in the program and the other is a group is individuals who are "statistically similar to the clients participating in the program, but who will not participate in the program."
D) Persons who are eligible to participate in the program but cannot be served because of inadequate funding.