Mohan bought two cows in Rs. 30,000. By selling one at a loss of 15% and other at a gain of 19%, he found that the selling price of both cows is the same. The cost price of both the cows are -

• A. Rs. 17,500, Rs. 12,500
• B. Rs. 15,000, Rs. 15,000
• C. Rs. 18,000, Rs. 12,000
• D. Rs. 20,000, Rs. 10,000