Answer:
d. 21, 21
Step-by-step explanation:
The Chaikin Money Flow is a model (indicator) that was developed by Marc Chaikin in the 1980s and it is typically used by financial institutions or experts to monitor the volume-weighted average of accumulation and distribution of a stock for a specific period of time. Thus, the default or standard period for the Chaikin Money Flow is 21 days
Hence, Chaikin Money Flow is calculated by summing the average of the daily money flow (ADs) over the past 21 days and dividing that sum by the total volume over the past 21 days.