单选题Which signal and noise values will result in the best phone communication with an access point？（）ASignal strength 0dBm， noise level 6dBmBSignal strength 8dBm， noise level 9dBmCSignal strength 4 dBm， noise level 4 dBmDSignal strength 6dBm， noise level 5
题目
单选题
Which signal and noise values will result in the best phone communication with an access point？（）
A
Signal strength 0dBm， noise level 6dBm
B
Signal strength 8dBm， noise level 9dBm
C
Signal strength 4 dBm， noise level 4 dBm
D
Signal strength 6dBm， noise level 5 dBm