What is the cause and possible resolution to this problem?

The Admin at Universal Containers received feedback that users are trying to reconfigure bundles on renewals quotes and finding that the Configuration Attribute values are blank and must be manually fixed. This issue is not observed on new business quotes.

What is the cause and possible resolution to this problem?
A . Configuration Attributes not configured for renewals; check Preserve for Renewals on Configuration Attribute records.
B . Preserve Bundle Structure not set up on Contract object; create a workflow rule to automatically set to true.
C . Field mapping not set up; create field on Subscription/Asset records with the same API name as field on Quote Line.
D . Field mapping not set up; create field on Quote Line with the same API name as the field in the configuration attribute.

Answer: C