Which Option Accurately Describes the Purpose of the HTTP Event

Which option accurately describes the purpose of the HTTP Event Collector (HEC) ?

A) A token-based HTTP input that is secure and scalable and that requires the use of forwarders.
B) A token-based HTTP input that is secure and scalable and that does not require the use of forwarders.
C) An agent-based HTTP input that is secure and scalable and that does not require the use of forwarders.
D) A token-based HTTP input that is insecure and non-scalable and that does not require the use of forwarders.