Which LEAST Represents a Benefit of Portfolio Assessment in the Workplace

Which LEAST represents a benefit of portfolio assessment in the workplace?

A) It can yield insights into how employees or prospective employees think about work-related things.
B) The prospective employer can view samples of the applicant's work product.
C) It potentially allows the employer entry into a side of the employee's world that would otherwise be private.
D) Use of such methods by prospective employers in certain economically depressed areas carries with it federal tax benefits.