Answer:
A) 12%
Explanation:
You can solve this question using a financial calculator. I am using (Texas Instruments BA II plus)
Note: use the "CF" button
CF0 = -91,110
From here onwards, press down arrow twice before keying in the next cashflow;
C01 = 30,000
C02 = 30,000
C03= 30,000
C04 = 30,000
Press IRR, CPT = 12.005%
Therefore, IRR = 12%