The following are preferred control measures for Fall-Hazards EXCEPT: A. Elimination - Removing the hazard from a workplace B. Prevention - Isolating or separating the hazards from the general work areas (e.g., same level barriers such as guardrails, parapets, walls or covers) C. Engineering Controls - If the hazard cannot be eliminated or prevented, an engineering control is the next-preferred measure to control the risk D. No action is required