What is the default minimum requirement for location tracking of a device?

What is the default minimum requirement for location tracking of a device?

A.
three APs at better than -67 dBm

B.
three APs at better than -70 dBm

C.
three APs at better than -75 dBm

D.
three APs at better than -80 dBm

E.
four APs at better than -67 dBm

F.
four APs at better than -70 dBm

G.
four APs at better than -75 dBm

Explanation: