Savings-Investment Imbalance

Does anyone have an issue with Problem 18 of Reading 23 (Book 3 page 118)? The answer given by CFAI for the last part about “current account surplus (deficit)” says that Canada’s currency should appreciate. If i understand correctly that this question is testing the concept of Savings-Investment imbalance, then the currency for UK should be the one appreciating to accommodate the current account deficit. Any opinions?