I need some help on this...

Which of the following WLAN security standards refer to the IEEE standard?
a. WPA
b. WPA2
c. WEP
d. 802.11i
The book (Odom ICND1) says B & D. I got this wrong because I said B, C & D.
I remember on Table 11-9 it says next to WEP, IEEE under "Who Defined It".
I guess... maybe... they are referring to the "standard" today as opposed to in the past? I dunno... made me upset when I read that answer LOL