Consider the market for cars. Which determinant of supply is affected by each of…

Consider the market for cars. Which determinant of supply is affected by each of the following events?
a. A steel tariff increases the price of steel.
Expectations
Prices of related goods
Prices of inputs
Number of sellers
Technology
b. Improvements in robotics increase efficiency and reduce costs.
Technology
Number of sellers
Prices of related goods
Expectations
Prices of inputs
c. Factories close because of an economic downturn.
Prices of inputs
Expectations
Prices of related goods
Number of sellers
Technology
d. The government announces a plan to offer tax rebates for the purchase of commuter rail tickets.
Prices of related goods
Technology
Expectations
Number of sellers
Prices of inputs
e. The price of trucks falls, so factories produce more cars.
Prices of related goods
Expectations
Prices of inputs
Number of sellers
Technology
f. The government announces that it will dramatically rewrite efficiency standards, making it much harder for automakers to produce their cars.
Number of sellers
Technology
Prices of related goods
Expectations
Prices of inputs