With no explanation, chose the best option from "A", "B", "C" or "D". Department of Transportation v. Renwick, 543 Pa. 122, 669 A.2d 934 (1996), our Supreme Court revisited this subject of conflict when they considered the appeal from this court’s Renwick opinion. Justice Zappala, writing for a unanimous Supreme Court, framed the question presented in Renwick as whether “a licensee’s refusal to sign a consent form after she orally agreed to submit to a blood test constitutes a refusal pursuant to 75 Pa.C.S. § 1547.” The Court held “that the failure to sign a consent form does not per se constitute a refusal to submit to chemical testing.” 669 A.2d at 935. In reaching this conclusion, the Court reviewed numerous Commonwealth Court cases in this area, beginning with Maffei v. Department of Transportation, 53 Pa.Cmwlth. 182, 416 A.2d 1167 (1980) (<HOLDING>), and divided the cases into two categories:

A: holding refusal to sign hospital waiver of liability form is not a refusal under section 1547
B: holding that a refusal to sign an implied consent form is not a refusal to submit to a breathalyzer test for purposes of section 1547
C: holding that a license suspension under section 1547 may not be supported by a licensees refusal to satisfy a pretest procedure impermissibly linked to the testing
D: holding that a district court did not clearly err in crediting agents testimony that a defendant had orally consented despite his refusal to sign consent form
A.