Chemical engineering plant cost index is used for finding the present cost of a particular chemical plant, if the cost of similar plant at some time in the past is known. The present cost of the plant = original cost (index value at present/ index value at time original cost was obtained). The most major component of this cost index is____________________?

A. Process instruments and control

B. Pumps and compressor

C. Fabricated equipment and machinery

D. Electrical equipments and material

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