Pick out the wrong statement.

• The annual depreciation rate for machinery and equipments in a chemical process plant is about 10% of the fixed capital investment.
• Annual depreciation rate of buildings in a chemical plant is about 3% of its initial cost.
• Insurance rates on annual basis in a chemical plant may be about 1% of the fixed capital investment.
• In a chemical industry, research and development cost amounts to about 15% of net sales realisation (NSR).