Sentence Correction (SC) | Re: The Marketing Department has adamantly rejected all claims that it was

The Marketing Department has adamantly rejected all claims that it was previously aware of the errorsdue to which sales of the new web-based service have amounted to a mere 1.5 million dollars instead of the expected 9 million dollars.

A. due to which sales of the new web-based service have amounted to a mere
B. which consequently caused sales of the new web-based service to amount to a mere sum of
C. due to which sales of the new web-based service have consequently amounted to a mere
D. due