Which One of the Following Statements Is True

Which one of the following statements is true?

A) Inventory is any physical asset held for future use or sale.
B) When using ABC analysis, "C" items should be reviewed most frequently.
C) Dependent demand is directly related to the demand of other stock keeping units and can be calculated without needing to be forecast.
D) Stockouts occur in a Fixed Quantity System (FQS) whenever the lead-time demand exceeds the replenishment level (M) .