which VPN protocol will be used first?

You create a VPN connection that has the VPN type set to Automatic. When attempting to establish
a VPN connection, which VPN protocol will be used first?

A.
PPTP

B.
L2TP

C.
SSTP

D.
IKEv2

Explanation:
https://blogs.technet.microsoft.com/networking/2014/01/13/configuring-native-vpn-client-throughpc-settings/