Answer:
A) Yes, Peter should be giving this position a second thought based on the clause. This type of clause is an Allowable Vacancy Rate.
Step-by-step explanation:
The problem with this clause is that in order to keep his job Peter needs to keep the vacancy rate below 12%. In order to do so, he might rent the apartments to anyone regardless of credit rating, and that may result in other problems. Sometimes the vacancy rate can vary depending on external factors, not only how good or bad Peter performs his duties, that is why he should really think about whether to accept or not this job.