Which of the following measures can be taken to make STAs preferentially associate with the 5 GHz radio? (Multiple Choice)

Which of the following measures can be taken to make STAs preferentially associate with the 5 GHz radio? (Multiple Choice)
A . Configure the transmit power on the 5 GH radio 3 dB to 8 dB higher than that on the 2.4 GHz radio.
B . Configure an AP to preferentially respond to Probe Request packets on the 5 GHz radio sent by STAs, and respond for several times before responding Probe Request packets on the 2.4 GHz radio.
C . Configure an AP to reject the request from a STA to associate with the 2.4 GHz radio of an AP, and allow STA association only after the number of rejections reaches the threshold. Configure an AP to immediately allow STA association if a STA requests to associate with the 5 GHz radio.
D . Configure a higher Beacon frame rate, a longer interval for sending Beacon frames, and a smaller number of retransmissions of Probe packets on the 5 GHz radio than on the 2.4 GHz radio.

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Answer: ABC