The gross domestic product (GDP) of the United States is defined as the all in a given year. Based on this definition, which of the following will be included in (that is, directly increase) the GDP of the United States in 2017? a. Sofaland, a Swedish furniture company, produces a table at a plant in Virginia on December 5, 2017. It sells the table to a college student on December 19, 2017. An accountant starts a client's 2017 tax return on April 14, 2018, finishing it just before midnight on April 15, 2018.
b. Treetopplers, an American lumber company, produces wood at a plant in Oregon on September 5, 2017. It sells the wood to Buildit and Partners, a developer, for use in the production of a new house that will be made in the United States In December.
c. Athleticus, an American shoe company, produces a pair of sneakers at a plant in Vietnam on March 5, 2017. Athleticus imports the pair of sneakers into the United States on May 14, 2017.
d. Zippy car, an American automobile company, produces a convertible at a manufacturing plant in Minneapolis on January 6, 2017. It sells the car at a dealership in Philadelphia on February 18, 2017.