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1 points Se Alex and Jim carry on a business in partnership and split any net income or losses equally. Gross income for the current income year is $40,000, of which $8,000 is made on sales outside Australia (for which no expenses are incurred). Business expenses of $25,000 include a salary paid to Alex of $5,000. All expenses relate to Australian source income. What is Jim's assessable income assuming he is a non-resident? O a: $6,000 O b. $12,500 C. $4,500 O d. $2,000