Assertion: IUPAC name of the compound is 2-Ethoxy-2-methylethane. Reason: In IUPAC nomenclature, ether is regarded as hydrocarbon derivative in which a hydrogen atom is replaced by -OR or -OAr group [where, R=alkyl group, Ar= aryl group]

Assertion and reason are correct and the reason is correct explanation of assertion.  Assertion is incorrect but the reason is correct. Assertion and reason both are incorrect. Both assertion and reason are correct nut the reason is not correct explanation of assertion.

Assertion is incorrect but the reason is correct.

Correct assertion: The IUPAC name of the given compound is 1-(2-propoxy)propane or 2-propoxypropane.