Donna and Mark are married and file a joint return reporting taxable income of $350,000. Donna owns a qualified S corporation that is not a specified service business. During the year, Donna incurs qualified business income of $75,000. Donna's share of wages paid by the business is $20,000. Assuming there is no qualified property factor, calculate her 20% QBI deduction.

a. $15,000.

b. $0.

c. $20,000.

d. $9,750.