Although it won't increase bank revenues to upgrade the operating syst

Although it won't increase bank revenues to upgrade the operating systems running the nation's ATMs, it is the risks involved in failing to update the software that make that alternative more costly.

A. Although it won't increase bank revenues to upgrade the operating systems running the nation's ATMs, it is the risks involved in failing to update the software that make that alternative more costly.

B. Although upgrading the operating systems running the nation's ATMs won't increase bank revenues, the risks involved in failing to update the software make that alternative more costly.

C. Even though it won't increase bank revenues if the operating systems running the nation's ATMs are upgraded, it is the risks involved in failing to update the software that could make that alternative more costly.

D. It won't increase bank revenues if and when the operating systems running the nation's ATMs are upgraded, whereas the alternative of failing to update the software is more costly, given the risks involved.

E. Upgrading the operating systems running the nation's ATMs won't increase bank revenues above today, but failing to update the software is the more costly alternative because of the risks involved.