Final answer:
The adjusting journal entry on December 31, 2018, for Sky Mountain Co. would include a credit to interest expense of $12,000 (B).
Step-by-step explanation:
The adjusting journal entry on December 31, 2018, for Sky Mountain Co. would include a credit to interest expense of $12,000 (B). The reason for this is because when a company borrows money through a note payable, they are required to pay both the principal and interest at the end of the loan term. In this case, the loan term is one year, and the interest rate is 6%. Therefore, the interest expense can be calculated as $200,000 * 6% = $12,000. By recording an adjusting entry to recognize the interest expense, the company is properly reflecting the cost of borrowing the money.
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