Which two are characteristics of the Transfer Object design pattern？（）

• A、It reduces network traffic by collapsing multiple remote requests into one.
• B、It increases the complexity of the remote interface by removing coarse-grained methods.
• C、It increases the complexity of the design due to remote synchronization and version control issues.
• D、It increases network performance introducing multiple fine-grained remote requests which return verysmall amounts of data.