In the practice exercise on blackboard (file Practice exercise - Convert Net Income to OCF), which of the net working capital adjustments has the largest cash effect on 2012 operating cash flows in terms of absolute magnitude (can have positive or negative cash effect)? positive or negative effect on operating cash flows?

a) change in Accounts Receivable, positive

b) change in Accounts Receivable, negative

c) change in Inventory, negative

d) change in Inventory, positive