Which one of the following architectural suggestions would you make to the customer?

A large real -estate brokerage is exploring the option o( adding a cost-effective location based alert to their existing mobile application The application backend infrastructure currently runs on AWS Users who opt in to this service will receive alerts on their mobile device regarding real-estate otters in proximity to their location. For the alerts to be relevant delivery time needs to be in the low minutecount the existing mobile app has 5 million users across the us

Which one of the following architectural suggestions would you make to the customer?
A . The mobile application will submit its location to a web service endpoint utilizing Elastic Load Balancing and EC2 instances: DynamoDB will be used to store and retrieve relevant otters EC2 instances will communicate with mobile earners/device providers to push alerts back to mobile application.
B . Use AWS DirectConnect or VPN to establish connectivity with mobile carriers EC2 instances will receive the mobile applications ‘ location through carrier connection: ROS will be used to store and relevant relevant offers EC2 instances will communicate with mobile carriers to push alerts back to the mobile application
C . The mobile application will send device location using SQ
D . EC2 instances will retrieve the re levant others from DynamoDB AWS Mobile Push will be used to send offers to the mobile application
E . The mobile application will send device location using AWS Mobile Push EC2 instances will retrieve the relevant offers from DynamoDB EC2 instances will communicate with mobile carriers/device providers
to push alerts back to the mobile application.

Answer: A