I just had lunch with my sisters and one of my sisters told me that she worked with the mom of one of the house guest . She works for this company . She was n't sure who the house guest was seeing that she does n't watch BB . She said it was the one with the twins . She also told me that on the employee website the first thing you see once you log in is a post about Libra being on Big Brother .
According to the above context, choose the best option to answer the following question.
Question: Why is the narrator so excited about her sister 's coworker ?
Options:
- She knows a big brother cast member 's family member .
 - She knows someone who is a Libra .
 - She works with the dad of a big brother cast member .
 - None of the above choices .


She knows a big brother cast member 's family member .