response time requirement for claims submitted by email?

You are working on an insurance claims application that receive claims email. The company receives 500 emails per hour. The insurance company promises a 24-hour response time to receive and verify the claim. After the claim is verified, the system automatically responds with an email containing the claim ID.

The application is developed in the cloud environment. The production environment is currently running on premise.

What is your recommendation to ensure the insurance company can meet the 24-hour

response time requirement for claims submitted by email?
A . Recommend the insurance company use email listener with concurrent threads.
B . Recommend the insurance company use an advanced agent to verify claims and respond.
C . Recommend the insurance company change its policy to allow for a broader processing and respond.
D . Recommend the insurance company use an MDB listener instead of an email listener.

Answer: D