Sharnita took a loan at simple interest rate of 6 p.c.p.a. in the first year and It increased by 1.5 p.c.p.a. every year. If she pays Z 8,190 as interest at the end of 3 years, what was her loan amount?

• A. 36000
• B. 35400
• C. 36800
• D. None of these