Which wireless access point series supports Cisco ClientLink 2.0 and Cisco CleanAir, but does not support clustering?

Which wireless access point series supports Cisco ClientLink 2.0 and Cisco CleanAir, but does not
support clustering?

A.
300 Series

B.
1600 Series

C.
700 Series

D.
2600 Series

Explanation:
Reference: http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps11203/C45-614928-00_Channel_AAG_Cisco_Unified_Wireless_Network_Portfolio.pdf