Refer to the exhibit. The wireless user is moving from right to left towards AP2.  What are three  reasons that the wireless client would initiate roaming？（）

• A、 The minimum data retry count from AP1 is exceeded.
• B、 The maximum data retry count from AP1 is exceeded.
• C、 The client has missed too many beacons from AP1.
• D、 The client data rate from AP1 has been reduced.
• E、 The client has received too many beacons from AP2.
• F、 The client data rate from AP2 has been increased.