Which compound could have produced the infrared (IR) spectrum shown below?

CH3CH2COOCH3\text{CH}_3\text{CH}_2\text{COOCH}_3CH3CH2COOCH3
CH3COCH2CH2OH\text{CH}_3\text{COCH}_2\text{CH}_2\text{OH}CH3COCH2CH2OH
CH3CH2CH2COOH\text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}CH3CH2CH2COOH
HOCH2CH2CH2CH2OH\text{HOCH}_2\text{CH}_2\text{CH}_2\text{CH}_2\text{OH}HOCH2CH2CH2CH2OH