Elizabeth has tax written down value on her main pool of plant and machinery of 16,000 on 6 April 2017. In the year to 5 April 2018 she bought a car with CO2 emissions of 110g/km for 8,000 (no non-business use) and she disposed of plant, which originally cost 4,000, for 6,000. The maximum capital allowances claim for the year is as follows