为啥A不对

问题如下：

An analyst is interviewing for a new job with a real estate investment firm. The interviewer asks about the difference between gross potential rental income and gross rental income for a property. Which of the following is the most correct response that the analyst might provide?

选项：

A.The difference between gross potential rental income and gross rental income reflects the vacancy rate of the property B.The difference between gross potential rental income and gross rental income reflects the difference between market rents on the property and its current rents. C.The difference between gross potential rental income and gross rental income reflects rental concessions provided to tenants

解释：

B is correct. Gross potential rental income reflects the product of market rents and rentable space. Gross rental income reflects the product of current rents and rentable space. Responses A and C are incorrect because vacancies and concessions are deducted from gross rental income to obtain net rental income.