In Keynes' Analysis of the Circular Flow, Unintended Inventories Are

In Keynes' analysis of the circular flow, unintended inventories are

A) products produced by business that are recalled due to defects in production.
B) all increases in inventories maintained by businesses.
C) all increases in inventories that result from a surprising decline in sales.
D) all decreases in inventories that result from a surprising increase in sales.