Answer:
1. -> B.
2. -> C
3. -> A
Explanation:
1. Antennas = help the router fetch and transmit a signal
2. Repeaters = help in increasing the range of signal
3. Adapters = help the device detect a wireless signal
Well we have SRAM(Static Random Access Memory) is faster, have a lower density but it is more expensive.
While DRAM(Dynamic Random access memory) is just the opposite.
Those are the only two, I know exist.