According to US federal rules, to present a testimony in a court of law, an expert witness needs to furnish certain information to prove his eligibility. Jason, a qualified computer forensic expert who has started practicing two years back, was denied an expert testimony in a computer crime case by the US Court of Appeals for the Fourth Circuit in Richmond,Virginia. Considering the US federal rules, what could be the most appropriate reason for the court to reject Jason's eligibility as an expert witness?
A. Jason was unable to furnish documents showing four years of previous experience in the field
B. Being a computer forensic expert, Jason is not eligible to present testimony in a computer crime case
C. Jason was unable to furnish documents to prove that he is a computer forensic expert
D. Jason was not aware of legal issues involved with computer crimes