In the following sequence of reactions:CH3CH2OH→P+I2A→dry etherMgB→HCHOC→H2OD the compound D is:

CH3CH2OH→P+I2CH3CH2IA→dry etherMgCH3CH2MgIB→H-CH|=OCH3C−CH2−CH2OMgI→H2O CH3CH2DCH2OH+MgOHIThe compound D is n-propyl alcohol.