For which of these taxpayer scenarios do you need to prepare a Schedule C?

Kathleen has a Form W-2G showing $15,000 in winnings from playing blackjack. She has records showing she spent $20,000 playing blackjack.

Ally has a Form 1099-MISC showing $1,000 in box 3 for winning a neighborhood fundraising raffle. She bought six raffle tickets for $5.

William sold his car to his neighbor for $2,500 cash. He bought the car ten years ago for $21,000.

Donna has a Form 1099-MISC showing $800 in box 7 as compensation for distributing product samples at neighborhood festivals. She incurred no expenses.