1. Which of the following would add to GDP in any on period? (a) The purchase of some strawberries from the supermarket. (b) The payment by the national government for public servants in the tax department. (c) The payment by the national government to an aged pension recipient. (d) The purchase of an old model car from a car dealer. (e) The purchase of some house paint by an owner occupier as part of a refurbishment project. (f) The purchase of some house paint by a professional painting tradesperson as part of a refurbishment project. (g) The sale of some military equipment to another country. (h) The purchase of some shares in an airline company.