Refer to the exhibit. Based on this Cisco Spectrum Expert "FFT Duty Cycle" screen capture, which device type is most likely generating the signal in Wi-Fi channel 1? 

Answer options:

A. a broad-spectrum, low-power device
B. a high-power, broad-spectrum, frequency-hopping device
C. a spread-spectrum, narrowband, frequency-hopping device
D. a high-power, narrow-spectrum, direct-sequence device using CCK modulation

B