Question 18 Not yet answered Marked out of 1.00 Flag question The GDP of the U.S. in 2014 was around $17.4 trillion. This means Select one: a. that total spending on final goods and services in the U.S. in 2014 was around $17.4 trillion. b. that the value of output in the U.S. in 2014 was around $17.4 trillion. c. all of the above d. that total income in the U.S. in 2014 was around $17.4 trillion