Cellular Mobile works in the frequency range of :
• A
840 to 935 MHz
• B
3.7 to 4.2 GHz
• C
420 to 890 MHz
• D
30 to 300 GHz

#### Solution

Cellular frequencies are the sets of frequency ranges within the ultra high frequency band that have been assigned for cellular phone use. Most cellular phone networks worldwide use portions of the radio frequency spectrum, allotted to the mobile service, for the transmission and reception of their signals, them being in range $840\ MHz$ to $935\ MHz$.