A tax that imposes a small excess burden relative to the tax revenue that it raises is

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

                                          hope it

answerthat 50% of all cases go to trial;

answer when little or no data is available;