MCO Manufacturing Sdn Bhd incurred the following expenditure for the construction of a factory building during the following financial years: RM Year ended 31.12.2016 Land cost 90,000 Legal fees and stamp duty for purchase of land 4,300 Construction cost Phase 1 200,000 Architect fees 13,200 Year ended 31.12.2017 Legal fees for agreement with building contractor 2,800 Construction cost Phase 2 160,000 Wiring and plumbing 28,000 498,300 The building was completed on 7 April 2017 but was brought into business use on 6 June 2017. 20% of total building area is allocated for an office use. Due to Covid-19 pandemic season, MCO is unable to sustain in the industry and the factory then was sold for RM 700,000 (including RM 100,000 for the land) on 28 December 2020.

Required: Calculate the industrial building allowances for each of the relevant years of assessment and the balancing allowance/ charge resulting from the sale.