US GAAP follows the Historical Cost Concept in valuing the cost of long-term assets. Explain this principle and how it compares to the standards used in the reporting of long-term assets under International Financial Reporting Standards (IFRS). If there is a convergence of standards, which method do you believe should be used and why? Provide 3 paragraphs. Do not use old Chegg answers or copy/paste word from word using websites.