Which of the following settings will reduce packet overhead and overall latency in a standalonepoint-to-point bridge deployment？（）

• A、enable concatenation on the non-root bridge only
• B、enable concatenation on the root bridge only
• C、enable concatenation on both the root bridge and non-root bridge
• D、enable concatenation on the root bridge and set it as desirable on the non-root bridge
• E、set concatenation as desirable on the root bridge and enable it on the non-root bridge