Please state if you agree/disagree with these statements and kindly support the stance by giving real-world examples or researches that would attest or refute the author's claims. (include citation) Thank you!!

1. Selecting the correct product costing system for strategic decisions can be challenging but is essential in guiding firm strategy. The wrong system can lead to faulty strategic decisions with disastrous results.
 
2. GAAP and IAS require the determination of the cost of goods sold or services performed for financial reporting. However, financial accounting does not require a high level of accuracy or relevance for product costing. The method just needs to be systematic and reasonable.
 
3. Given diverse demands on cost information, there is no single system that meets every reporting and strategic need.

These are the few statements from the article "Product Costing Systems: Finding Right Approach" by Fisher and Krumwiede.