According to Oracle documentation2, the minimum number of ledgers you need when your company has a legal entity in the UK, US, and Canada and they can all share the same chart of accounts but are required to transact and report in their local currency is three, because each requires a different currency. A ledger is a combination of a chart of accounts, calendar, currency, and accounting method. Therefore, option B is correct. Option A is incorrect because you cannot have one ledger for different currencies. Option C is incorrect because you cannot have two ledgers for different currencies. Option D is incorrect because you don't need four ledgers for this scenario.