Taxpayer, Donna Dawson, on her 2020 federal income tax return correctly claimed her son as a dependent. Assume that the son earned $7,000 in 2020 mowing lawns while away from home attending college and that the son filed a 2020 personal federal income tax return. What personal exemption deduction amount may the son claim on his 2020 federal income tax return?

A. $4,300

B. 350

C. 0

D. 1,000

E. None of the above