Which One of the Following Statements Is NOT True

Which one of the following statements is NOT true?

A) The cash conversion cycle begins when the firm invests cash to purchase the raw materials that would be used to produce the goods that the firm manufactures.
B) The cash conversion cycle begins when the firm uses its cash to purchase raw materials and ends when the firm collects cash payments on its credit sales.
C) To measure the cash conversion cycle, we need another measure called the days' payables outstanding.
D) The cash conversion cycle ends not with the finished goods being sold to customers and the cash collected on the sales; but when you take into account the time taken by the firm to pay for its purchases.