Which of the following transactions would be included in 2016 U.S. GDP?

Which of the following transactions would be included in 2016 U.S. GDP? For those transactions which are included in U.S. GDP, indicate whether they should count as part of C, I, G, or NX. Assume that all buyers and sellers are domestic unless otherwise stated.

A. A household purchases a home in 2016 that was constructed and available for sale in 2015.
B. A household purchases 100 shares of Apple stock in 2016.
C. An increase in General Motors’ inventory of unsold automobiles in 2016.
D. A Social Security check received by a retired worker in 2016.
E. The purchase of newly-produced Northrop jet fighter by the U.S. Air Force in 2016.
F. The purchase of Nike shoes produced in a Mexican factory in 2016.
G. You spend the entire Thanksgiving weekend of 2016 cleaning the rain gutters of your house.
H. You pay the firm “In the Gutter” to clean the rain gutters of your house that same weekend.