Three articles are purchased for Rs. 1050, each with a different cost. The first article was sold at a loss of 20%, the second at 1/3rd gain and the third at 60% gain. Later he found that their SPs were same. What was his net gain/loss?

• A. 14.28% gain
• B. 13% loss
• C. 12% loss
• D. 11.11% gain