What is enterprise resource planning?

Select one:

a$.$ A system that serves as the organization's backbone in providing fundamental decision$-$making support

b$.$ A standardized set of activities that accomplish a specific task, such as processing a customer's order

c$.$ A system that involves managing all aspects of a customer's relationship with an organization to increase customer loyalty and retention and an organization's profitability

d$.$ The analysis and redesign of workflow within and between enterprises