For the following condensed structural formulae, with corresponding IUPAC nomenclatures, which of them satisfies the alcohol formula of C₃H₈O?

Condensed structures of 1-propanol and 2-propanol for alcohol formula C3H8O.

Structures of cyclopropan-1-ol and tert-propanol for alcohol formula C3H8O.

Structures of butan-3-ol and isobutanol for alcohol formula C3H8O.

Structures of 3-butyl alcohol and ethanediol for alcohol formula C3H8O.

For the following condensed structural formulae, with corresponding IUPAC nomenclatures, which of them satisfies the alcohol formula of C3H8O?