Answer:
By retrospective application to the financial statements of all prior periods presented.
Step-by-step explanation:
From the question we are informed about Volga Co. who included a foreign subsidiary in its Year 6 consolidated financial statements. The subsidiary was acquired in Year 4 and was excluded from previous consolidations. The change was caused by the elimination of foreign currency controls. Including the subsidiary in the Year 6 consolidated financial statements results in an accounting change that should be reported By retrospective application to the financial statements of all prior periods presented.
Consolidated financial statements can be regarded as financial statements of a particular group whereby equity, assets as well as liabilities and cash flows and expenses of the parent company as well as its subsidiaries are been presented in a way of single economic entity. In others words Consolidated financial statements can as well be regarded as financial statements of an organization having multiple divisions or multiple subsidiaries. Some firms often use the consolidated as regards financial statement reporting to describe aggregated reporting of business collectively.