In 2020, Mary sells for $24,000 a machine used in her business. The machine was purchased on May 1, 2018, at a cost of $22,000. Mary has deducted depreciation on the machine of $6,000. What is the amount and nature of Mary's gain as a result of the sale of the machine?

a. $6,000 Section 1231 gain and $2,000 ordinary income under Section 1245

b. $6,000 ordinary income and $2,000 Section 1231 gain

c. $2,000 Section 1231 gain

d. $8,000 ordinary income under Section 1245

e. None of these choices are correct