\"Eco Textiles Inc.\" is seeking ISO 14067:2018 certification for its new line of organic cotton t-shirts. As part of the certification process, they must adhere to the principles of GHG accounting as outlined in ISO 14064, which are foundational to ISO 14067. Which of the following options BEST describes the core principles Eco Textiles Inc. must uphold to ensure a credible and reliable carbon footprint assessment of their t-shirts, demonstrating a commitment to transparency and accuracy in their environmental reporting, and facilitating meaningful comparisons with other similar products in the market?