When STA6 sends an association request to AP1 for the first time, which of the following statements is TRUE?

As shown in the figure, four STAs (STA1 to STA4) are associated with AP1 and STA5 is associated with AP2. The start threshold for load balancing is set to 5. AP1 and AP2 each allow a maximum of 10 STAs and the load difference threshold is set to 10%.

When STA6 sends an association request to AP1 for the first time, which of the following statements is TRUE?
A . AP1 preferentially uses the load balancing algorithm for calculation and allows the association request from STA6.
B . AP1 preferentially uses the load difference threshold algorithm for calculation and allows the association request from STA6.
C . AP1 preferentially uses the load balancing algorithm for calculation and rejects the association request from STA6.
D . AP1 preferentially uses the load difference threshold algorithm for calculation and rejects the association request from STA6.

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Answer: D