which of the following statements is true? group of answer choices a, b, and c employers are not concerned with determining a potential employee's productivity because they realize that they cannot accurately determine it beforehand. employers are not concerned with determining a potential employee's productivity because they know that they can train the employee after he's hired. employers are concerned with determining a potential employee's productivity due to the high costs of training new employees. employers are not concerned with determining a potential employee's productivity because they know that with experience the employee's output will increase.