Which of the following is a tertiary alcohol?
[tex]\left(\mathrm{CH}_3\right)_3 \mathrm{COH}[/tex]
[tex]\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{OH}[/tex]
[tex]\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OCH}_3[/tex]
none are tertiary alcohols
[tex]\left(\mathrm{CH}_3\right)_2 \mathrm{CHOH}[/tex]