A global film production company uses the AWS Cloud to encode and store its video content before distribution. The company's three global offices are connected to the us-east-1 Region through AWS Site- to-Site VPN links that terminate on a transit gateway with BGP routing activated.
The company recently started to produce content at a higher resolution to support 8K streaming. The size of the content files has increased to three times the size of the content files from the previous format. Uploads of files to Amazon EC2 instances are taking 10 times longer than they did with the previous format.
Which actions should a network engineer recommend to reduce the upload times? (Choose two.)

A. Create a second VPN tunnel from each office location to the transit gateway. Activate equal-cost multi- path (ECMP) routing.
B. Modify the transit gateway to activate Jumbo MTU on the VPN tunnels to each office location.
C. Replace the existing VPN tunnels with new tunnels that have acceleration activated.
D. Upgrade each EC2 instance to a modern instance type. Activate Jumbo MTU in the operating system.
E. Replace the existing VPN tunnels with new tunnels that have IGMP activated.