Jose Has Been Working on an Assembly Line in a U.S.car-Manufacturing

Jose has been working on an assembly line in a U.S.car-manufacturing factory for the past thirty years.Which of the following trends is he most likely to have witnessed?

A) An increasing number of the parts assembled at the plant are made in the United States.
B) The factory has increased its production in the plant,which has required management to hire more blue-collar workers.
C) Many of the activities that were formerly carried out in the plant have been outsourced to other countries.
D) The new workers who are hired in the plant are more skilled than he was when he began.