When Using Cisco YDK, Which Syntax Configures the BGP ASN

When using Cisco YDK, which syntax configures the BGP ASN using OpenConfig BGP?

A) bgp.config.as_ = 65000
B) bgp.global_.config.as = 65000
C) bgp.global.config.as_ = 65000
D) bgp.global_.config.as_ = 65000