Casey is a general partner in Country Sun Nutrition, a specialty store that sells nutritional supplements. He actively participates in the operations of the business. Under the terms of the partnership agreement, he is to receive 40% of the partnership income, but not less than $50,000. During the year, the store had net income of $100,000. How much of Casey's income from this partnership is subject to self-employment tax? $0 $10,000 $40,000 $50,000

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