Which of the following should be implemented to prevent similar situations in the future?

Several large orders of merchandise were recently purchased on an e-commerce company’s website. The totals for each of the transactions were negative values, resulting in credits on the customers’

accounts.

Which of the following should be implemented to prevent similar situations in the future?
A . Ensure input validation is in place to prevent the use of invalid characters and values.
B . Calculate all possible values to be added together and ensure the use of the proper integer in the code.
C . Configure the web application firewall to look for and block session replay attacks.
D . Make sure transactions that are submitted within very short time periods are prevented from being processed.

Answer: A