Answer: alternative A.
Explanation: Performance standards establish what are the starndards a company is persuing while offering a service or a product, for example. It can be a number of products that must be produced per day, how well or badly rated it is going to be according to their clients, etc. It is meant to optimize the production and maximize the profit. Therefore, it can't be applied while the work is being done, it has to be planned as any other selling strategies.