According to the Case Study on the Market for Graduates

According to the case study on the market for graduates with Ph.D. degrees in mathematics:

A) immigrants stand little chance of landing a job at a U.S. university.
B) U.S. citizens stand little chance of landing a job at a U.S. university.
C) foreign students have been taking a substantial portion of job openings at U.S. universities.
D) the quality of university education is likely to deteriorate with the entry of foreign graduates into the academic labor market.