The companies that are the prime purchasers of computer software will not buy a software package if the costs of training staff to use it are high, and we know that it is expensive to teach people a software package that demands the memorization of unfamiliar commands. As a result, to be successful, commercial computer software cannot require users to memorize unfamiliar commands.
The conclusion above follows logically if which one of the following is assumed?
(A) If more prime purchasers of computer software buy a software product, that product will successful.
(B) Commercial computers software that does not require users to memorize unfamiliar commands is no more expensive than software that does.
(C) Commercial computer software will not be successful unless prime purchasers buy it.
(D) If the initial cost of computer software is high, but the cost of training users is low, prime purchases will still buy that software.
(E) The more difficult it is to learn how to use a piece of software, the more expensive it is to teach a person to use that software.
i know the OA and I have explanation also, but explanation is not convincing, so please explain your reasoning. thank you.