In the context of knowledge management, which task is performed by the chief knowledge officer $($CKO$)$ in an organization?

a$.$ Ensuring that the organization profits from knowledge resources

b$.$ Focusing on gaining and leveraging a keen understanding of consumers

c$.$ Identifying groups of people based on common interests and recommending products or services

d$.$ Ensuring that key knowledge resources are properly collected, stored, and disseminated among the consumers