Total expenditures for domestically produced goods and services consist of

answer; ///i believe the correct answer is(e) complementary to each other;

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the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.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

answer///video, because samuel can show his work in real time and be better understood;