RST Corporation operates in three segments: Technology, Healthcare, and Consumer Goods. The following financial data is provided for the year ended 31 December 2024:

Item	Technology ($)	Healthcare ($)	Consumer Goods ($)	Total ($)
Sales revenue	600,000	400,000	300,000	1,300,000
Variable costs	300,000	200,000	150,000	650,000
Fixed costs	150,000	120,000	90,000	360,000

Required: a. Prepare a segmented income statement for the year ended 31 December 2024. b. Calculate the contribution margin for each segment. c. Determine the segment margin for each segment. d. Evaluate the performance of each segment and provide recommendations for improving profitability.