Your company has started hosting its databases on the Amazon RDS. As an architect, they have requested you to advise the IT admin staff on monitoring the underlying databases. Notifications should be sent to IT admin staff if any issues are detected. Which AWS services can accomplish these requirements? Choose 2 answers from the options given below.

Answer options:

A.Amazon Simple Email Service
B.Amazon CloudWatch
C.Amazon Simple Queue Service (SQS)
D.Amazon Route 53
E.Amazon Simple Notification Service (SNS)

Answer - B and E
The AWS Documentation mentions the following.
You can monitor DB instances using Amazon CloudWatch, which collects and processes raw data from Amazon RDS into readable, near real-time metrics. These statistics are recorded for a period of two weeks. For that, you can access historical information and gain a better perspective on how your web application or service is performing. 
Option A is invalid since this an email service and not a notification service.
Option C is invalid since this is a queuing service.
Option D is invalid since this is a domain name service.
For more information on monitoring databases, please visit the below URL-
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Monitoring.html