$12.$ Mr$.$ Van Driesen is trying to decide whether or not to buy or lease a computerized

grading system for his class. He can buy it for $$12,000$ or lease it for $$1800$ per year

for the next five years. He can get the funds for the lease, by borrowing at $8\%$ from

the schools line of credit. The grader has no salvage value and fits into the $25\%$ CCA

bracket. The tax rate is $33\%.$ What is the NAL? $($Answer: C$)$

a$.$ $$2,898\mathrm{.}4$

b$.$ $$3,164\mathrm{.}5$

c$.$ $$3,375\mathrm{.}18$

d$.$ $$3,554\mathrm{.}3$

e$.$ $$3,841\mathrm{.}2$

The correct answer is $$3,375\mathrm{.}18$ but I need a clearer breakdown of how to solve this question