When people feel that house prices will rise, they will be more willing to buy commercial houses; but when people feel that house prices will still fall, they will be more unwilling to buy commercial houses. Therefore, when the government's encouraging purchase policy was just introduced, it will not stimulate people Willingness to buy a house. Which of the following is most likely assumed by the above argument? ["The government's encouraging home purchase policy is often lagging behind and cannot reflect the current price of commercial housing in a timely manner.", 'Most people buy a house mainly due to changes in house prices, not government purchase policies.', "When the government's encouraging purchase policy was first introduced, most people felt that house prices would still fall.", "Most people will have a strong willingness to buy a house when the government's restrictive purchase policy is just introduced."]