Question: DVB Bank SE is part of which second largest bank in Germany by asset size and the central institution for more than 1,000 co-operative banks and their 12,000 branch offices?
Sentence (from "Delta Community Credit Union"): It is a member of CO-OP, formerly known as CU Service Centers, a nationwide cooperative that allows customers to bank at over 3,500 credit unions and over 5,000 branches.
Relevant evidence: No