Which type of network security while setting up Vodafone Mobile wiFi

[Steve_1959_]

I am trying to set up a Vodafone MobileWiFi on my PC. In the set up screen, I need to complete a few fields:

Network Name (I have typed in Vodafone here)

Security Type - either:

No authentication
WEP
WPA2 - Personal
WPA2 - Enterprise
802.1x

Security Key (I have this)

Which Security Type option should I select, please?

Thanks.