How can the user do that easily with CloudWatch?

A user is observing the EC2 CPU utilization metric on CloudWatch. The user has observed some interesting patterns while filtering over the 1 week period for a particular hour. The user wants to zoom that data point to a more granular period.

How can the user do that easily with CloudWatch?
A . The user can zoom a particular period by selecting that period with the mouse and then releasing the mouse
B . The user can zoom a particular period by double clicking on that period with the mouse
C . The user can zoom a particular period by specifying the aggregation data for that period
D . The user can zoom a particular period by specifying the period in the Time Range

Answer: A