Which One of the Following Choices Describes a Problem for Which

Which one of the following choices describes a problem for which an analysis of variance would be appropriate?

A) Comparing the proportion of successes for three different treatments of anxiety. Each treatment is tried on 100 patients.
B) Analyzing the relationship between high school GPA and college GPA.
C) Comparing the mean birth weights of newborn babies for three different racial groups.
D) Analyzing the relationship between gender and opinion about capital punishment (favor or oppose) .