it is in management information system please answer quickly I don't have time only 10 minutes

Volvo Automobiles is using an employee skills database to identify the skill set of the employees. They have prepared a database of their employees' skill set which helps the manager to identify the right employee for the job. The information system mentioned in this scenario can be classified into information systems in O a Production and Operations Management b. Finance and Accounts Management O c. Human Resources management, od Marketing and Sales Operations. University of Technology and Applied Sciences Oman is designing a data warehouse. Data warehouse design is a costly process as each type of data storage costs a lot of money. Which of the following factors is to be considered while designing a data warehouse? O a. The type of data that is needed for the current and future needs. O b. The quantity of data needed for the organizational decisions c. All of these Od. The level of accuracy of data Carrefour hypermarkets are using a customer loyalty program called "My club" to reduce the competition in the market. They have developed an application called my club and it is linked to Carrefour's database to analyse the customer data and provide offers to customers. This feature of My club application is related to O a Operations Management system O b. Human Resource Management system Oc Customer relationship management system od Accounting and Finance Management system