Your company needs to establish a VPN between AWS and its on-premises infrastructure. They have the following requirements.
Support for RSA 4096-bit encryptions.
RADIUS / NT Domain user authentication function.
Deep-inspect packet logging function.
What can be done to achieve this requirement?

Answer options:

A.Use an AWS Managed VPN.
B.Use a VPN from the AWS marketplace.
C.Use AWS Direct Connect with a Private VIF.D.Use AWS Direct Connect with a Public VIF.

Answer - B
Since the requirements are very specific, you will need to use a custom VPN from the AWS Marketplace.
Hence all other options become invalid because of the very specific requirements.
An example of a VPN server from the AWS Marketplace is given below.
https://aws.amazon.com/marketplace/pp/B00MI40CAE/ref=mkt_wir_openvpn_byol