Your company has the following setup with dynamic routing at the customer gateway.
The routes advertised by both Customer gateway 1 and Customer Device 2 are 10.0.0.0/16. How will the traffic flow from the AWS to the data center?

Answer options:

A.The traffic will flow primarily through Customer gateway 1.
B.The traffic will flow primarily through Customer device 2.
C.The traffic will flow primarily through the Internet.
D.Traffic will not flow due to the conflict in routes.

Answer – B
This sort of scenario is given in the AWS Documentation.
Configuration Details
The configuration in this example consists of two dynamically routed connections, one using AWS Direct Connect and the other using a VPN connection from two different customer devices. AWS provides example router configurations to assist in establishing both AWS Direct Connect and VPN connections with BGP for dynamic routing. By default, AWS will always prefer to send traffic over an AWS Direct Connect connection, so no additional configuration is required to define primary and backup connections. In this example, both Customer Gateway 1 and Customer Device 2 advertise a summary route of 10.0.0.0/16. AWS will send all traffic to Customer Device 2 as long as this network path is available.
By default, all other options become invalid.
For more information on Data Center High Availability, one can visit the below URL
https://aws.amazon.com/answers/networking/aws-multiple-data-center-ha-network-connectivity/