What does a plan number contain that indicates the year of registration?

A plan number typically contains specific digits that convey important information about the year of registration. The first two digits are set aside for this purpose, allowing anyone who reads the plan number to quickly identify the year in which the plan was registered.

This convention helps maintain a systematic approach to categorizing plans, aiding in both organization and retrieval. By using the initial two digits, the registering entity can ensure that plans can be sorted chronologically or linked to specific time frames, making it easier for investigators, planners, and other stakeholders to understand the context and recency of the data referenced in the plan.

Other options do not serve the same purpose in this context, as they do not correspond to the specific structure established for indicating the year of registration.