Answer – B and C
The AWS documentation mentions the following on link aggregation group
· All connections in the LAG must use the same bandwidth. The following bandwidths are supported: 1 Gbps and 10 Gbps.
· You can have a maximum of 4 connections in a LAG. Each connection in the LAG counts towards your overall connection limit for the region.
· All connections in the LAG must terminate at the same AWS Direct Connect endpoint.
For more information on link aggregation group , please refer to the below link
http://docs.aws.amazon.com/directconnect/latest/UserGuide/lags.html