What are two variables for configuring clientless SSL VPN single sign-on?

What are two variables for configuring clientless SSL VPN single sign-on? (Choose two.)

A.
CSCO_WEBVPN_OTP_PASSWORD

B.
CSCO_WEBVPN_INTERNAL_PASSWORD

C.
CSCO_WEBVPN_USERNAME

D.
CSCO_WEBVPN_RADIUS_USER