What is the proper order of the following designs if they are to be listed from the one with least amount of control over variables to the most? a. pretest posttest control group, Solomon four-group, quasi-experimental, one-group pertest postest b. one-group pretest posttest, quasi-experimental, pretest posttest control group, Solomon four-group c. one-group pretest posttest control group, Solomon four-group, quasi-experimental d. quasi-experimental, one-group pretest posttest, pretest posttest control group, Solomon four-group