What does this even English
The answer: Taxonomy I think
<span>Technically you could have both influenza and bronchitis at the same time, but it is not likely. Influenza is the word for a respiratory infection caused by a virus whereas bronchitis is an infection specifically of the bronchi in the lungs. However, influenza is characterized by different symptoms from bronchitis due to the different systemic nature of influenza.</span>
You should know that A is always with T and C is always with G so the answer is:
A. TTAGCT :)))
i hope this is helpful
have a nice day