AWS Certified Solutions Architect - Professional (#421)

An organization is setting up a multi-site solution where the application runs on premise as well as on AWS to achieve the minimum recovery time objective(RTO). Which of the below mentioned configurations will not meet the requirements of the multi-site solution scenario?

Configure data replication based on RTO.
Keep an application running on premise as well as in AWS with full capacity.
Setup a single DB instance which will be accessed by both sites.
Setup a weighted DNS service like Route 53 to route traffic across sites.