4. Which of the following must be added back to taxable income in the calculation of alternative minimum taxable income of an individual?

a. A traditional IRA account contribution.

b. One half of the self-employment tax deduction.

c. The standard deduction.

d. Charitable contributions.

5. A single taxpayer is the sole shareholder of a law firm treated as an S corporation. The law firm reported the following items:

Ordinary business income (net)	$	150,000
Wages paid		250,000
Qualified property's unadjusted basis		60,000

Assume the Section 199A threshold is $160,700 for the current year. If the taxpayer's taxable income is $300,000, what amount, if any, is the taxpayer's total qualified business income with respect to the law firm?

a. $0

b. $30,000

c. $125,000

d. $150,000

Please answer both questions.