Answer: See explanation
Step-by-step explanation:
a. Remain constant
From the question, we are informed that Nation Furniture workers just signed a two-year contract. This then means that even though there is an increase in price level, it doesn't affect the prices of inputs as they still remain constant.
b. Increase
We should note that when there is a rise in the price level, this will also bring about an increase in the prices of the output.
c. Increase in economic profit
The firm will have a rise in the economic profit in the short run. There'll be an increase in revenue which ultimately increase economic profit as well since input prices remain the same.