Answer:
B) 5 years
Step-by-step explanation:
Year Cash outflow Cash inflow Balance 
 0 (10,000.00) - (10,000.00) 
 1 - 2,000.00 (8,000.00) 
 2 - 2,000.00 (6,000.00) 
 3 - 2,000.00 (4,000.00) 
 4 - 2,000.00 (2,000.00) 
 5 - 2,000.00 - 
All amounts above are stated in $.
From the table above, it will take 5 years to pay back. 
The right option is B) 5 years.