For what purpose is the Cisco ASA appliance web launch SSL VPN feature used?

A.
to enable split tunneling when using clientless SSL VPN access

B.
to enable users to login to a web portal to download and launch the AnyConnect client

C.
to enable smart tunnel access for applications that are not web-based

D.
to optimize the SSL VPN connections using DTLS

E.
to enable single-sign-on so the SSL VPN users need only log in once