Final answer:
A brokerage can choose to retain either a summary document or the original offer of a successful transaction depending on their internal policies and practices.
Step-by-step explanation:
A brokerage can choose to retain either a summary document or the original offer of a successful transaction. This choice depends on the brokerage's internal policies and practices. Some brokerages may prefer to keep a summary document for record-keeping purposes, while others may choose to retain the original offer to have a more detailed and complete record of the transaction.
For example, if a brokerage retains a summary document, it may include important information such as the parties involved, the date of the transaction, and the agreed-upon terms. This document provides a brief overview of the transaction and can be a useful reference.
On the other hand, if a brokerage retains the original offer, it would have a more comprehensive record of the transaction. The original offer would contain all the specific details of the transaction, including any amendments, counteroffers, or additional terms that may have been negotiated during the process.