Cell phone jammers work by interfering with the signals exchanged between cell phones and nearby cell phone towers. As a result, cell phones being affected by cell phone jammers do not receive communication signals from nearby towers.

How do cell phone jammers disable the communication between cell phones and nearby cell phone towers?
A.
Cell phone jammers change the frequency of the signals emitted by cell phones and cell phone towers.
B.
Cell phone jammers transmit powerful signals at the same frequency as the signals used by cell phones and cell phone towers.
C.
Cell phone jammers absorb signals that are emitted by cell phone towers before they reach cell phones in the area.
D.
Cell phone jammers reflect the signals emitted from cell phone towers away from cell phones in the area.