An immigration agent sampled cars going from country M to country N. In his​ report, he indicated that of the cars​ sampled, cars were driven by​ women, cars were driven by citizens of country​ M, cars had two or more​ passengers, cars were driven by women who are citizens of country​ M, cars were driven by women and had two or more​ passengers, cars were driven by citizens of country M and had two or more​ passengers, and cars were driven by women who are citizens of country M and had two or more passengers. After his supervisor reads the​ report, she explains to the agent that he made a mistake. Explain how his supervisor knew that the​ agent's report contained an error.