What step(s) would ensure that the file uploads are able to complete in the allotted time window?

A media company produces new video files on-premises every day with a total size of around
100GBS after compression All files have a size of 1 -2 GB and need to be uploaded to Amazon S3
every night in a fixed time window between 3am and 5am Current upload takes almost 3 hours,
although less than half of the available bandwidth is used.
What step(s) would ensure that the file uploads are able to complete in the allotted time window?

A.
Increase your network bandwidth to provide faster throughput to S3

B.
Upload the files in parallel to S3

C.
Pack all files into a single archive, upload it to S3, then extract the files in AWS

D.
Use AWS Import/Export to transfer the video files

Explanation:
http://aws.amazon.com/importexport/faqs/