Which of the expenses on scientific research related to the business are allowed a deduction in the PY of commencement of the business, although incurred within 2 years immediately before the commencement of the business?
1. Any revenue expense on scientific research.
2. Payment of salary to employee engaged in scientific research.
3. Purchase of material used in scientific research.
4. Repair and maintenance expense on the asset acquired for scientific research.
5. Land acquired for scientific research.
6. Building constructed for scientific research.
7. Plant and machinery acquired for scientific research.
Select the correct answer using the options given below

A. 1, 3, 4 and 7

B. 3, 4, 5 and 6

C. 2, 3, 7 and 6

D. 3, 4, 5 and 7

Answer: Option C