Credit checking is done in the A. order processing system B. quotation system C. order entry system D. any of the above E. None of the above

The correct answer is: C. order entry system

Credit checking is done in the order entry system. This is because the order entry system is responsible for capturing the customer’s order information, including their credit card information. The order entry system then verifies the customer’s credit card information and authorizes the transaction.

The order processing system is responsible for fulfilling the customer’s order. This includes picking the items from inventory, packing the items, and shipping the items to the customer.

The quotation system is used to generate quotes for customers. This includes providing the customer with information about the products or services that they are interested in, as well as the price of those products or services.

None of the above options are correct.