Rearrange the sentences to form a coherent paragraph

A. He said studies by different institutions have been commissioned for ascertaining the impact of the oil spill on the fishery sector and other economic losses.
B. Government made it clear that 'polluter must pay' for the environmental and maritime losses arising out of the collision of the two ships off Mumbai coast early this month.
C. Ramesh said the Maharashtra Pollution Control Board has asked the National Institute of Oceanography and the National Environment Engineering Research Institute to carry out comprehensive environmental impact assessment studies. A separate study has been commissioned to know the oil spill impact on fishery sector.
D. "Polluter must pay and polluter will pay," Environment minister Jairam Ramesh told the Rajya Sabha in reply to a short duration question on the oil spill resulting from the collision of vessels on August seven.