$2-)$ Mowasalat is considering between two alternatives for purchasing sensors to improve the monitoring of transport services in Qatar.

Alternative $1$: Purchase sensors at a cost of $\backslash (\backslash$$ $30\backslash )$ per unit that can be used directly in the vehicles. Alternative $2$: It can manufacture the sensors locally at $\backslash$$$20$ per unit. However, it needs to buy an electronic device today at $\backslash$$$150,000.$ Labor and other operating costs are estimated to be $\backslash$$$30,000$ per year over the study period of $10$ years. The salvage value is estimated at $\backslash (10\backslash \%\backslash )$ of the first cost, and the interest rate is $\backslash (10\backslash \%\backslash )$ per year.

Using the breakeven analysis, determine which alternative Mowasalat should choose if the number of needed sensors is $5,500$ each year. $(60$ p $)$