12.During gene translation, the codon “AUG” serves as the start signal, while “UAA”, “UAG”, and “UGA” function as stop codons. Given the coding sequence “5´-ACTGCATGCGCTTAGACCAATGCCCATGCCTCGGGGAATGAATCC3´”, an open reading frame (ORF) is present. Based on this sequence, how many amino acid residues are encoded within the ORF? (A) 9; (B) 11; (C) 12; (D) 15.