Answer:
B). Earnings section of the income statement and writing down the cost basis to FMV.
Step-by-step explanation:
As per the question, the controller would include 'earnings section of the income statement and writing down the basis of cost to FMV' as the it would be able to record the decline in FMV properly by including these details. The earnings segment of the income statement and the noting down of the cost basis related to the financing(investment) to its FMV. If the securities that are 'available-for-sale' face a loss that is regarded permanent or 'other than temporary', then the security is required to be written down on a new cost basis and must be considered as a realized loss. Therefore, option B is the correct answer.