Why Would Financial Institutions Want Consumers to Use Debit Cards

Why would financial institutions want consumers to use debit cards?

A) For every transaction, the financial institution receives a transaction fee from merchants.
B) They give the institution a hard "paper trail" for customer transactions.
C) They increase the amount of interaction the institution has with its customers.
D) They allow institutions to replace all their banks with less expensive ATMs.
E) They reduce the number of teller transactions and check processing costs.