Given the Following Notation, Which Design Is Illustrated $$\mathrm { X } \quad \mathrm { O }$$

Multiple Choice

Given the following notation, which design is illustrated? $$\mathrm { X } \quad \mathrm { O }$$

A) One-group posttest-only design
B) One-group pretest-posttest design
C) Posttest only control group design
D) Posttest-only design with nonequivalent groups