"La resistencia a la corrosión en un fundido de cobalto-cromo se debe a la presencia de:"
	A: "Hierro de alta calidad"
	B: "Chrome" (Note: This is already in English, so no translation is needed.)
	C: Cobalto
	D: "Níquel"
	
"Chrome" (Note: This is already in English, so no translation is needed.)