Wildfilms Ltd$.,$ who is your client, has raised a ticket complaining of loss in signal strength since the new upgrade. Earlier, the connection was established using wired transmission, which has now been upgraded to a wireless connection. Which of the following will you use to amplify the power of the transmission in this scenario so that the issue can be resolved?

a$.$ Wireless range extender

b$.$ RSSI

c$.$ FHSS

d$.$ Signal propagation