Answer:
B. both models allow for government intervention in the short run.
Step-by-step explanation:
Keynesian model - this model encourages the demand to increase the economy. This model believes that to boost the economy, an increase in consumer demand is a must.
it believe larger the investment in the demand more will be output, supply and less will be inflation. so for the increase in demand, Keynesians advise lowering the tax value.
AD-AS model is often called as demand-aggregate supply model. This model explain the relationship between the demand and aggregate supply.