Why wages differ For each of the scenarios in the following table, indicate the most likely reason for the difference in earnings. Scenario Differences in Skills and Human Capital Differences in Job Preferences Age Differences in Worker Preferences Two security guards have the same amount of schooling and work experience but earn different wages. One of them works for a prison and earns an annual wage of $52,000 per year. Another works for a museum and earns an annual wage of $32,000 per year. Beth, a 50-year-old doctor with 20 years of experience, earns more than Darnell, a 30-year-old doctor just out of medical school with the same skills and field of specialization. Rina works eight hours a day plus an additional hour of overtime at a local coffee shop as a barista. Sean also works as a barista at the same coffee shop but works only four hours a day so that he will have more time to practise playing the guitar. Both baristas are paid the same hourly rate. An economics consulting firm hires Neha, a recent Ph.D. graduate in economics, and pays her an annual wage of $78,000. It also hires Andrew, a recent master's degree graduate