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Youaredevelopingaclasslibrary.Portionsofyourcodeneedtoaccesssystemenvironmentvariables.YouneedtoforcearuntimeSecurityExceptiononlywhencallersthatarehigherinthecallstackdonothavethenecessarypermissions.Whichcallmethodshouldyouuse?()
A.set.Demand();
B.set.Assert();
C.set.PermitOnly();
D.set.Deny();
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