Most businesses have switched at least partially from tracking their cash flow by hand on paper ledgers to using electronic bookkeeping software that performs computations much more quickly than they can be performed manually. Therefore, it is clear that less time is being spent on bookkeeping at the companies that are using the software than would have been spent if these companies had retained the older systems.

Which of the following, if true, most strengthens the argument above?


Most of the businesses that have at least partially switched to the new electronic systems have improved their productivity.

The amount of time needed to maintain the new electronic bookkeeping systems and train employees to use them is less than the amount of time that would have been required to perform computations using the older manual methods.

It takes less time to produce and distribute the new software systems than it takes to produce and distribute paper bookkeeping ledgers.

Many of the businesses that have at least partially switched to the new electronic systems still keep paper records of many of their financial transactions.

More computers are required by those businesses that have switched to the new electronic systems than by those businesses that have not switched.


OA is B. please explain how B is stronger than A