Corbin has a $15,000 basis in his 50% ownership in an S corporation and lent the corporation $5,000 last year. The corporation has $30,000 of other debt. This year the corporation reported a $100,000 loss. How much of this loss may Corbin deduct?
1. $15,000
2. $20,000
3. $35,000
4. $50,000