Read the sentences.

Cindy did not eat the sandwich. She is allergic to peanut butter.

Which connects the sentences and shows a logical relationship between ideas?

Although she did not eat the sandwich, she is allergic to peanut butter.
Cindy did not eat the sandwich while she is allergic to peanut butter.
Cindy did not eat the sandwich because she is allergic to peanut butter.
For example, Cindy did not eat the sandwich and is allergic to peanut butter.