By default, when an EBS volume is attached to a Windows instance, it may show up as any drive letter on the instance. Which of the following services can be used to change the settings of the drive letters of the EBS volumes as per your specifications?

Answer options:

A.EBSConfig Service
B.AMIConfig Service
C.EC2Config
D.EC2-AMIConfig Service

Answer – C
Option C is correct because the EC2Config service (EC2Config.exe) is an application that enables users to make changes to windows VMs, such as changing the drive letters for any attached Amazon EBS volumes. EC2Config starts when the instance boots and performs tasks during startup and each time you stop or start the instance.
Please refer to the below link.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Stop_Start.html
Option A is incorrect because there is no such service as EBSConfig service.
Option B is incorrect because there is no such service as AMIConfig service.
Option D is incorrect because there is no such service as EC2-AMIConfig service.