Calculate debt service coverage ratio $($using EBITDA instead of EBIT$)$ based on the company's financial information below:

Net Operating Profit: $12,000$

Depreciation & Amortization: $2,000$

Accounts Payable: $2,000$

Line of Credit: $2,500$

Current Portion of Long$-$Term Debt: $3,000$

Interest Expense: $800$

$3\mathrm{.}7$

$1\mathrm{.}9$

$2\mathrm{.}5$

$2\mathrm{.}2$