Your Friend Read a Research Report Concluding That College Men

Your friend read a research report concluding that college men scored 25 points higher on a mathematics achievement test than college women and said, "Being a woman really causes them to be worse at math." You reply,

A) "Twenty-five points may not be a significant difference, so maybe it's not important."
B) "But the same report said that women scored 30 points higher on the synonym test for verbal fluency, so being a woman causes superior verbal performance."
C) "This experiment may not have controlled for number of math classes completed, so the experimenter could not make clear conclusions of causality, and you shouldn't, either."
D) "Any study with gender as a variable is not experimental, so any conclusions of causality are inappropriate."