After conferencing with a student to get more clarification about a written piece, a teacher suggests the following revision to the student sentence. Student wrote: Shannon and Theresa's phone had no signal on the road trip. Teacher revision: Shannon's and Theresa's phones had no signal on the road trip. Which of the following statements best supports the reason for the teacher's revision?

While it is true that there are multiple girls on the road trip, this statement does not directly explain the need for the revision regarding the ownership of the phones. It fails to address the grammatical structure of the original sentence and the clarification provided by the teacher.

This choice implies that Shannon and Theresa share a single phone, which contradicts the teacher's revision. The original sentence suggests that each girl has her own phone, making this option inaccurate in the context of the teacher's suggested revision.

This statement addresses a detail about the phone service but does not support the grammatical revision made by the teacher. The issue at hand is the pluralization of "phones" to indicate ownership, which is unrelated to the type of phone carrier they may have.