What is the function of a monitoring and alerting tool?

What is the function of a monitoring and alerting tool?
A . Focus on examining the usage of resources by customers and service providers and provide notification to optimize and manage workloads
B. Control charges for cloud usage by optimizing cloud resource utilization
C. Automate tasks and IT processes and manage the IT environment
D. Enable people to work closely together on a common project, in real time, by making communication among them easier

Answer: A