Alvin Kremmler has traded as a professional baker for a number of years. During 2023, Alvin has maintained records of the following receipts and trading stock and seeks your advice. TRANSACTIONS $ Government incentive to open a store in regional Victoria 40,000 Sales of baked products to general public 485,000 Sales of desserts to the restaurant of Alvin's brother Calvin (Alvin invoiced Calvin at twice the market value to help reduce Calvin's taxable income) 35,000 Proceed from insurance for loss of trading stock during a power outage 8,000 Stock as at 30th June 2022 (at cost) 3,000 Stock as at 30th June 2023 (replacement cost) 6,000 Stock as at 30th June 2023 (at cost) 5,000 REQUIRED: a) Advise Alvin of any amounts of assessable income. b) Explain your answer with reference to the relevant sub