A laboratory's primary susceptibility testing method is disk diffusion. The cefoxitin disc has a zone size of 19 mm and the vancomycin disc has a zone size of 7 mm. Which of the following are appropriate courses of action?

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	Report the isolate as oxacillin resistant and vancomycin susceptible.
	Report the isolate as oxacillin resistant and suppress the vancomycin result.
	Repeat the disc diffusion test; if results verify, perform or refer the isolate for vancomycin MIC testing.
	If in-house vancomycin MICs are greater than or equal to 4 µg/mL, refer isolate to a reference laboratory.