Final answer:
Transferring data between Azure Storage accounts in different Azure regions can have varying costs depending on the subscription plan.
Step-by-step explanation:
The correct answer is d) Varies by subscription plan.Transferring data between Azure Storage accounts in different Azure regions can have different costs depending on the subscription plan that you have chosen.For example, if you have a Pay-As-You-Go plan, you will be billed based on the amount of data transferred and the distance between the regions. However, if you have an Enterprise Agreement or other specific plan, you may have different pricing options or even free data transfer between regions.