Statement A is correct in this regard
Step-by-step explanation:
This statement is true that a downfall in aggregate or cumulative demand will primarily affect real output and employment if rates are inflexible downward because the inflexible downward prices means no profit for the manufactures which means no production and no production means no employment which simply means no money to the consumers and no demand from the consumers.
Thus this statement is correct from economic scenario. Thus the inflexible downward price is causing the whole production and demand cycle in the economy.