This sequence encodes for a particular protein that helps bacteria move. A mutation occurs in the sequence, leading to a faulty protein. Identify the sequences where the mutation might have taken place.

ATTTGCATACTACCGGGC

The red letters are the noncoding region, and the black letters are the protein coding region.

ATTAGCATACTACGGGC
ATTTGCATACTGACCGGGC
ATTTGCAATACTACCGGGC
ATTTGCAACTACCGGGC
ATGAATGCATACTACCGGG