E 1. Close to Til percent of the value of any given requirement is established when needs are recognized and described. Therefore, the following functions should work together during need recognition and description: the primary user and specifier. the primary user and supply. the primary user, design engineering and supply. the primary user, design engineering, supply and accounting. the primary user, design engineering, supply and all other relevant functional areas such as accountingffinance, marketing and operations. Fla-PET!\