A Solutions Architect is designing a highly-available website that is served by multiple web servers hosted outside of AWS. If an instance becomes unr

esponsive, the Architect needs to remove it from the rotation.

What is the MOST efficient way to fulfill this requirement?

A. Use Amazon CloudWatch to monitor utilization.

B. Use Amazon API Gateway to monitor availability.

C. Use an Amazon Elastic Load B

alancer.

D. Use Amazon Route 53 health checks.