Would an Independent-Samples T Test Be Appropriate When Using Three

Multiple Choice

Would an independent-samples t test be appropriate when using three groups (a control group and two experimental groups) to compare differences on an IQ test? Explain.

A) Yes; IQ test scores is a scale variable.
B) Yes; the participants belong to different groups.
C) No; there are more than two groups.
D) No; the independent variable should be a scale variable.