In DynamoDB, the default table size is:

A.
5 GB

B.
1 GB

C.
10 GB

D.
There is no table size

Explanation:
DynamoDB has seamless scalability with no table size limits and unlimited storage, so you shouldn’t be worried about
managing storage on the host or to provisioning more drive, as your data requirement changes.
http://aws.amazon.com/dynamodb/