The correct answer is: B. cost, value.
Human resource accounting (HRA) is a process of measuring and reporting the costs and value of employees to an organization. HRA can be used to make decisions about staffing, compensation, and training.
The costs of employees include salaries, benefits, and training costs. The value of employees includes their productivity, their ability to attract and retain customers, and their ability to innovate.
HRA is a relatively new field, and there is no single accepted method for measuring the costs and value of employees. However, HRA can be a valuable tool for organizations that want to make better decisions about their human resources.
Option A is incorrect because benefits are not the only costs associated with employees. Salaries, training costs, and other costs are also associated with employees.
Option C is incorrect because contracts and agreements are not the only ways to measure the value of employees. Productivity, customer attraction and retention, and innovation are also ways to measure the value of employees.
Option D is incorrect because HRA is a real field with real applications.