Which two statements are true regarding the NorthStar Controller API? (Choose two)
A. The southbound interface connects to routers and switches using IS-IS, OSPFv2, BGP-LS, and PCEP protocols
B. The southbound interface is a RESTful implementation that can be programmed with a programming language
C. The northbound interface connects to routers and switches using IS-IS, OSPFv2, BGP-LS, and PCEP protocols
D. The northbound interface is a RESTful implementation that can be programmed with a programming language