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? Check all that apply. 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. b. An accountant starts a client's 2017 tax return on April 14, 2018, finishing it just before midnight on April 15, 2018. c. 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. Athleticus, an American shoe company, produces a pair of sneakers at a plant in Vietnam on March 5, 2017. d. Athleticus imports the pair of sneakers into the United States on May 14, 2017. e. 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.