With no explanation, chose the best option from "A", "B", "C" or "D". F.3d 608, 612 (5th Cir.1996)). We conclude that, although the district court erroneously determined that the principles of Daubert did not apply to the re-creation and Agent Constantino’s testimony, the district court did not err in admitting the evidence. Under Daubert, the district court conducts a “preliminary assessment of whether the reasoning or methodology underlying the testimony is scientifically valid and of whether that reasoning or methodology properly can be applied to the facts in issue.” Daubert, 113 S.Ct. at 2796; see Fed.R.Evid. 702 . This “gate-keeping” obligation on the part of the district court applies to all types of expert testimony, not just scientific testimony. See Kumho Tire Co., Ltd. v. Carmichael, 526 U.S. 137, 119 S.Ct. 1167, 1174, 143 L.Ed.2d 238 (1999) (<HOLDING>). Many factors may bear on this inquiry,

A: holding that the admission of expert testimony was prejudicial where the testimony was pervasive
B: holding that dauberts basic gatekeeping obligation  applies to all expert testimony
C: recognizing the basic principle of contract law that the obligation of good faith is an implied condition in every contract
D: holding that insurance obligation was primary to indemnity obligation
B.