which three frequency bands does the Cisco Spectrum Expert Wi-Fi tool perform spectrum analysis?

In which three frequency bands does the Cisco Spectrum Expert Wi-Fi tool perform spectrum analysis? (Choose three)

A.
ISM 2.4 GHz

B.
ISM 900 MHz

C.
ISM 5 GHz

D.
public safety 4.9 GHz

E.
GSM 1.9 GHz