What could be the reason for this?

A carrier has responded to your request for quotation but was NOT automatically assigned to the freight order.

What could be the reason for this? There are 2 correct answers to this question.
A . The carrier responded after the response time had expired
B . The tendering process was set to ‘Direct Tendering – Send Freight Order Directly’
C . The program to evaluate freight quotations was NOT executed
D . The tendering profile contains a subsequent step

Answer: A,C