Answer:
2) an area where the firm can contribute to the green effort, as well as cut costs.
Step-by-step explanation:
Banks and most private companies are continually looking for ways to reduce costs so that they can make larger profits. In this case, the bank will probably cut some costs by not using paper anymore.
The fact that it can be seen as a green effort is a plus to the cost saving. Green efforts are usually heavily publicized, even more if it's a bank. Banks usually have bad reputations so whatever makes them look good, and better if it's free (or in this case they even save money), just suits them perfectly.