Where should the AWS DMS replication instance be placed for the MOST optimal performance?

A Database Specialist is migrating a 2 TB Amazon RDS for Oracle DB instance to an RDS for PostgreSQL DB instance using AWS DMS. The source RDS Oracle DB instance is in a VPC in the us-east-1 Region. The target RDS for PostgreSQL DB instance is in a VPC in the use-west-2 Region.

Where should the AWS DMS replication instance be placed for the MOST optimal performance?
A . In the same Region and VPC of the source DB instance
B . In the same Region and VPC as the target DB instance
C . In the same VPC and Availability Zone as the target DB instance
D . In the same VPC and Availability Zone as the source DB instance

Answer: D