Use the following information to answer the next question.
| A shopkeeper mistakenly bought a defective wooden cot. Since the cot was defective, he gave a discount of 20% on it. He marked its price in such a way that he managed to limit his loss to Rs 400, which amounted to 4% loss. |
At what price did the shopkeeper mark the cot?
Rs 13000
Rs 12000
Rs 9900
Rs 8900