Which of the Following Is False Regarding Solomon Four-Group Design

Which of the following is false regarding Solomon four-group design?

A) Solomon four-group design is a combination of classical experimental design and two-group posttest only design.
B) Solomon four-group design is created in an attempt to eliminate virtually all threats to validity.
C) Test bias can be accounted for in Solomon four-group design.
D) Solomon four-group design is flawless; therefore, most criminal justice researchers utilize only Solomon four-group design.