I have already installed the spy cams in my office and my home because even my wife is working and we have to leave our little child with the nanny at home . We thought that after installing the spy cam at our home we can give our child the best protection . My sister in law was worried about the thefts which were happening in her shop .

Question: Why does the narrator install the spy cams at home ?
Answer: None of the above choices .The nanny has screwed up before .Installing them was cheap .They want to be cautious .