4. (15%) (Timing Decision) Company JC needs to undergo a major computer upgrade. The benefits of the system will be $50 per year for 15 years, regardless on when the system is installed. The price of the system costs $300 upfront. However, like other technological goods, the price of the same system is expected to go down by $10 a year. Should Company JC install the system now, wait for 1 year, or wait for 2 years? Assume interest rate is 10% p.a.