Refer to the exhibit. Which two statements about the topologies shown are correct?()<br /> <img height="240" src="https://nimg.ppkao.com/2018-07/longzhengxuan/201807261132244948.jpg?sign=20136cd453e8e0d0dd7665c7bb5eb514&t=62d1c7b8" width="586" />
A、Design 1 is a looped triangle design.
B、Design 2 is a looped triangle design.
C、Design 2 achieves quick convergence using RSTP.
D、Both designs supportstateful services at the aggregation layer.
E、Design 2 is the most widely deployed in enterprise data centers.