For each of the following transactions, determine the contribution to the current year's GDP. a) On January 1, you buy 10 gallons of petrol at GHC 15 per gallon. The filling station purchased the petrol the previous week at wholesale price of GHC 12 per gallon. b) You purchased a locally manufactured AK 47 used in the 2nd world war during an exhibition for GHC 2million. The brokerage fee was 6% of the sale value. c) A homemaker enters the work force, taking a job that pays GHC 40,000 a year. The homemaker now hires a nanny who is paid GHC 16,000 per year.