Which of the following should not be claimed as deductions from gross income? (2014 Bar Question)

The question

Which of the following should not be claimed as deductions from gross income? (2014 Bar Question)

1. A.discounts given to senior citizens on certain goods and services.
2. B.advertising expense to maintain some form of goodwill for the taxpayer’s business.
3. C.salaries and bonuses paid to employees.
4. D.interest payment on loans for the purchase of machinery and equipment used in business.

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