In general, what is the difference in transmit power between an AP operating at Tx Power Level 1and the same AP operating at Tx Power Level 3?

In general, what is the difference in transmit power between an AP operating at Tx Power Level 1
and the same AP operating at Tx Power Level 3?

A.
2 dB

B.
3 dB

C.
6 dB

D.
11 dB

E.
17 dB