What is the BEST reason for storing people's credit card information as part of most commercial software applications? a
It's expensive to store that much data.

b
You're liable if someone commits credit card fraud.

c
It's a high security risk to store that kind of data.

d
It's illegal to store that kind of data.

c. It's a high security risk to store that kind of data.

Explanation:

A credit card has a lot of important and personal data of the user, for this reason, allowing software, even commercial software to have access to this information, can promote a high security risk, because frauds can occur that promote damage to the user. For this reason, it is important that before providing the data, the user knows the software very well.