Investigators Think That Income Might Be a Confounder in the Relationship

Investigators think that income might be a confounder in the relationship between Hispanic ethnicity and cardiovascular disease.They conduct a case-control study,and they match cases and controls based on income.They find that Hispanics are more likely to have cardiovascular disease as compared with non-Hispanics.What is the measure of association used in such study?

A) Risk ratio
B) Relative risk
C) Incidence rate ratio
D) Attack rate
E) Odds ratio