Which of These Aspects of Supply Chain Management Are Especially

Which of these aspects of supply chain management are especially concerning to small business?
(I) customer reliability
(II) inventory management
(III) purchasing costs
(IV) risk management
(V) international trade

A) III, IV, and V only
B) I, II, and III only
C) I, III, and IV only
D) I and II only
E) II, IV, and V only