A Libra Sdn Bhd is a resident company located in Kajang Selangor. In line with its business expansion program, company has purchased a land costing RM2 million on 1 April 2015 to construct a new factory. For the financial year ended 30 June 2017, the following expenditures were incurred: Legal fee for land acquisition Architect's fee Electrical wiring & fittings Draining system Demolition of illegal squatter houses Construction costs RM 90,000 150,000 80,000 15,000 20,000 2.200.000 2.555.000 The construction of the factory was completed on 1 March 2017 and immediately used as a factory. Total built-up of the factory was 40,000 sq.ft which 2,000 sq.ft. was used as an office. The company also incurred the following expenditures during year 2018; Construction of living accommodation for factory workers at a cost of RM320,000. i. ii. A staff recreation building for RM80,000. Required: Calculate the industrial building allowances for all relevant till year of assessment 2020 for all buildings (10 marks) (CLO1:PL01:C4) B. Explain in details on the concept of relevant interest