We are looking to purchase a new Border Disc, after researching different types and sizes of Border discs we have found the following two options:

A$)$ Option #$1$ Central California Implement$-$ has priced the Border Disc at $$7800\mathrm{.}00.$ CCI will finance our purchase for one year at $8\%$ interest and no down payment.

B$)$ Option #$2$ Quality Machinery$-$ has priced the Border Disc at $$8500.$ QM will finance our purchase for one year at $7\mathrm{.}5\%$ interest with a $10\%$ down payment.

Question: Which of the two purchase will cost us the least amount of money? Please choose an option by calculating out the long term cost of each option, then explain why you chose that option based on your calculations.