Based on the figure below. Starting from long-run equilibrium at point C, a tax cut that increases aggregate demand from AD to AD1 will lead to a short-run equilibrium at point ________ and eventually to a long-run equilibrium at point ________, if left to self-correcting tendencies. 

The cheapest time to buy domestic trips was ___ days--about two months--before departure

Fill in the blank(s) with the appropriate word(s).

Adding the quantities demanded by all consumers at every price will yield

A) the market-clearing price. B) the number of consumers. C) the total substitution effect from a price change. D) the market demand curve.