3. Which is a deductible tax expense against gross income?
   1. Estate tax
   2. Foreign income tax claimed as tax credit
   3. Documentary stamp
   4. Donors tax

4. Which of the following is a qualification of adopting private entry?
   1. It must have a credible track record
   2. It must have been in existence for at least 1 year
   3. It must not have been prosecuted and found guilty of engaging in illegal activities such as money laundering and other similar circumstances
   4. All of the above

5. Which of the following is not special expense under the NIRC and special laws?
   1. Discounts to senior citizen under RA 9257
   2. Discount to persons with disability under RA 9442
   3. Income distribution from taxable estate or trust
   4. None of the above