With no explanation, chose the best option from "A", "B", "C" or "D". attention deficit disorder. I see these patients for their regular medical problems and provide their primary medical care. [Emphasis added.] Dr. Rushing’s report and curriculum vitae show that he was (a) actively and currently practicing medicine at the time it was written, (b) has actually treated and was currently treating patients being prescribed Adderall specifically for ADD, and (c) is board certified in internal medicine. Thus, he meets the requirements set forth in section 74.401(a) and (c) for being qualified to render an opinion as to the standard of care applicable to the treatment of a person diagnosed with ADD and being prescribed Adderall. See Tex. Civ. Prac. & Rem.Code Ann. § 74.401(a), (c); Terry A. Leonard, P.A., 293 S.W.3d at 677; cf. Barber, 303 S.W.3d at 795-96 (<HOLDING>). Appellants contend that because Dr. Rushing

A: holding that anesthesiologist who had participated in numerous similar surgeries and had observed proper padding and positioning technique as part of surgical team was qualified to provide expert report as to standard of care applicable to general surgeon
B: holding that standard of care need not be listed separately in report when same standard applies to each health care provider
C: holding expert report requirement fulfilled in claim against nurse by providing expert report of nurse as to standard of care and expert report of medical doctor as to causation
D: holding that a written report drafted by a person who is not properly qualified as an expert may not be considered as summary judgment evidence
A.