What are the two$(2)$ mode in Internet Key Exchange $($IKE$)$ negotiations?

A$.$ IKE$$s two modes can be used: main mode and aggressive mode,IKE main mode is more involved and aggressive consolidates squeezes the IKE SA negotiation into three packets, with all data required for the SA passed by the initiator

B$.$ IKE$$s two modes can be used: main mode and passive mode,IKE main mode is less involved and passive mode more complex were negotiation is slower, and the initiator and responder ID pass in the clear

C$.$ IKE$$s two modes can be used: quick mode and aggressive mode,IKE quick mode is less involved and aggressive more complex with negotiation is slower, and the initiator and responder ID passed encrypted

D$.$ IKE$$s two modes can be used: clear$-$txt mode and encrypted mode,IKE clear$-$txt mode is less involved passes data in clear text and encrypted mode is complex and slower all communication is encrypted

E$.$ None of the above