A Researcher Investigating Race and the Likelihood of Getting a Loan

A researcher investigating race and the likelihood of getting a loan sends black, white, and interracial couples, who are part of the research team, to banks to apply for loans. The couples have the same (fake) data on their applications. This project

A) is an example of content analysis
B) is a lab experiment
C) is a field experiment
D) can't be an experiment, since there are two variables (race and loan success)