Help with TSA question

https://preview.redd.it/rfnlhbknm4wd1.png?width=950&format=png&auto=webp&s=79a5825817cf7cb8447b5cd1f3706d6b7b914fdd

Can anyone help me understand this question from the 2018 TSA? they say the answer is C but my answer was D. This is the medicmind explanation but could this not also apply for D?

https://preview.redd.it/64ptze50n4wd1.png?width=1336&format=png&auto=webp&s=5514a05a7701013494017868d9ddd77059aec97d