A Global IT firm is using a fleet of Reserved Instance for its intranet applications. For uninterrupted services, they are planning to queue Reserved Instance purchases. Which of the following is the correct statement for queuing Reserved Instance?

Answer options:

A.Reserved Instance purchases can be queued only for Reserved instance purchases from other sellers but not for Regional Reserved Instance.
B.Reserved Instance purchases can be queued only for Zonal Reserved instances but not for Regional Reserved Instances.
C.Reserved Instance purchases can be queued only for Zonal Reserved instances but not for Reserved Instance from other sellers.
D.Reserved Instance purchases can be queued only for Regional Reserved instance but not for Reserved Instance from other sellers.

Correct Answer – D
Reserved Instance can be queued for purchase on a future date. Reserved Instance purchase can be queued only for regional instance & not for zonal Reserved Instance & Instance brought from other sellers. 
Option A is incorrect as Reserved Instance purchases cannot be queued for purchases from other sellers.
Option B & C are incorrect as queuing of Zonal Reserved Instance is not supported.
For more information on queuing Reserved Instance purchase, refer to the following URL-
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ri-market-concepts-buying.html#ri-queued-purchase