User talk:71.17.128.203

May 2024
Hello, I'm Rinbro. An edit that you recently made to Opportunity cost seemed to be a test and has been reverted. If you want to practice editing, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks! Rinbro (talk) 00:53, 21 May 2024 (UTC)