d) List down the advantages and disadvantages of electro-pneumatic system compared to pneumatic system. [10 Marks] e) Based on your opinion, which system between pneumatic, electro-pneumatic, hydraulic and electro-hydraulic are preferable and more practical to be used in industries to be run in 24 hours per day? State your justifications. [20 Marks] f) With aids of a diagram, describe TWO (2) equipment in railway system using pneumatic or hydraulic system. You can refer to any journal or paper publications or website for the examples. Please include the references