Refer to the exhibit. 
Which two statements about the topologies shown are correct? (Choose two.)
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 support stateful services at the aggregation layer.
E.
Design 2 is the most widely deployed in enterprise data centers.