A company purchased an equipment for $50,000 three years ago. The depreciation amounts are $7,000, $5,000, and $3,000, in years 1,2, and 3, respectively. The equipment now is sold for $37,000. Using 30% income tax rate on year 3, which of the following statements is correct? O a. The company doesn't have to pay tax O b. The company is liable a tax of $600. Oc. The company has a tax credit of $600 O d. None of the answers