Final answer:
Enrolled Agents (EAs) must retain documents for a period of 3 years according to IRS guidelines, to cater to any potential issues or audits
Step-by-step explanation:
The term 'EA' can refer to various entities depending on context, such as 'Enrolled Agent' for IRS matters or 'Enterprise Agreement' in the context of software licensing. For an Enrolled Agent (EA) dealing with the IRS, the correct answer is that they must retain documents for a period of 3 years. This is stipulated by the IRS to ensure that important tax-related records are maintained for a sufficient amount of time to address any issues or audits that may arise. In other contexts, the requirements for document retention could be different, so it is crucial to consider the specific context when determining the correct length of time for document retention.