In a study on test anxiety, a researcher is particularly interested in studying only first-year university students because the researcher wants the findings to generalize to only first-year students in large universities in the U. S. The researcher samples first-year students at the researcher's own west coast state university. The researcher has identified all first-year students at the researcher's institution, has determined his desired sample size, and has listed all the members of the population.What is the accessible population in the researcher's study?

a.First-year students at the researcher's university

b.Students at the researcher's university

c.West coast university students

d.First-year students at U.S. universities