Consider the Diagram for a Labour Market in Which the Relevant

Multiple Choice

Consider the diagram for a labour market in which the relevant job attribute is job safety. Why are the isoprofit curves concave, i.e., bowed in towards the origin?

A) Because paying higher wages and providing a safer environment for the workers are both costly for the employer
B) Because the marginal rate of transformation between wages and safety is increasing as a firm introduces more sophisticated safety procedure.
C) Because a firm's profit decreases if it provides a safer environment for the workers.
D) Because there is a negative trade-off between job safety and wages
E) Because the marginal rate of transformation between wages and safety is decreasing as a firm introduces more sophisticated safety procedure.