Answer: $12000
Step-by-step explanation:
The amount of interest should Turnbull include in the cost of the building from the current period will be calculated as the outstanding debt multiplied by the interest rate. This will be:
= $200,000 × 6%
= $200,000 × 6/100
= $200,000 × 0.06
= $12,000
Therefore, the correct option is C.