In 2005 General Motors (GM) announced that it would reduce employment by 30,000 workers. What does this

Question:

In 2005 General Motors (GM) announced that it would reduce employment by 30,000 workers. What does this decision reveal about how it viewed its marginal revenue product (MRP) and marginal resource cost (MRC)? Why didn’t GM reduce employment by more than 30,000 workers? By fewer than 30,000 workers?