please choose the correct option for each problem thank you!

Describe how each of the following will affect the supply of personal computers: (a) A rise in wage rates will cause the supply curve to [ Select ] ["decrease", "increase"] ; (b) An increase in the number of sellers of computers will cause the supply curve to [ Select ] ["increase", "decrease"] ; (c) A tax placed on the production of computers will cause the supply curve to [ Select ] ["decrease", "increase"] ; (d) A subsidy for the production of computers will cause the supply curve to