Choice "C" is correct, inventories carried at cost.Rule: Balance sheet accounts are generally included at the current exchange rate, except for:
A self contained subsidiary with a 3 year inflation rate of 100% or more (hyperinflationary economy).
A foreign entity which does not maintain its accounts in a foreign functional currency.
In these circumstances, the remeasurement method is used and the historical rates should be used only for those balance sheet accounts carried at "cost" (most non-monetary items). Otherwise follow the general rule and use the "current" rate.
Choices "d", "b", and "a" are incorrect. Bonds payable and accrued liabilities are "monetary" items. Marketable equity securities are non-monetary items, but are reported at fair value. Because they are reported at fair value, they should be remeasured using the current exchange rate.