Which compound contains a bond angle of approximately 120∘120^\circ120∘?
(CH3)2CHCH2OH\text{(CH}_3\text{)}_2\text{CHCH}_2\text{OH}(CH3)2CHCH2OH
CH3CH2CH2CH2Cl\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{Cl}CH3CH2CH2CH2Cl
CH3CH2CH2CHO\text{CH}_3\text{CH}_2\text{CH}_2\text{CHO}CH3CH2CH2CHO
CH3CH2CH2NHCH3\text{CH}_3\text{CH}_2\text{CH}_2\text{NHCH}_3CH3CH2CH2NHCH3