When propane is reacted with chlorine in the presence of ultraviolet light, a radical substitution reaction occurs. Which of the following lists consists solely of radicals that are formed as intermediates at some stage of this mechanism?
H∙\text{H}^\bulletH∙, Cl∙\text{Cl}^\bulletCl∙, CH3CH2CH2∙\text{CH}_3\text{CH}_2\text{CH}_2^\bulletCH3CH2CH2∙
Cl∙\text{Cl}^\bulletCl∙, CH3CH2∙\text{CH}_3\text{CH}_2^\bulletCH3CH2∙, CH3CH∙CH3\text{CH}_3\text{CH}^\bullet\text{CH}_3CH3CH∙CH3
Cl∙\text{Cl}^\bulletCl∙, CH3CH2CH2∙\text{CH}_3\text{CH}_2\text{CH}_2^\bulletCH3CH2CH2∙, CH3CH∙CH3\text{CH}_3\text{CH}^\bullet\text{CH}_3CH3CH∙CH3
H∙\text{H}^\bulletH∙, CH3CH2CH2∙\text{CH}_3\text{CH}_2\text{CH}_2^\bulletCH3CH2CH2∙, CH3CH∙CH3\text{CH}_3\text{CH}^\bullet\text{CH}_3CH3CH∙CH3
