Buy$-$side e$-$commerce is different from sell$-$side e$-$commerce in that it involves:

a$)$ An organization using electronic media to purchase from to its suppliers

b$)$ Any electronically mediated communication between an organization and its stakeholders

c$)$ An organization using electronic media to sell direct to its customers

d$)$ The use of electronic communications for all business processes

e$)$ None of the above