Mohini Sharma is an investment analyst tasked with evaluating the 2008 performance of Bengal Aluminium Company. She discovered the company changed its depreciation method for its main smelter, impacting profits. If the old method was used, profits would be Rs. 141.6 million lower. Her analysis aims to determine Bengal's true 2008 profits compared to previous years and its competitor National Aluminium Company. She must also uncover the motives for Bengal's depreciation policy change.