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 .

Question: Why is the narrator so excited about her sister 's coworker ?
Answer: 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 .