Explain how a country with a current account surplus is a ripe candidate for currency revaluation

What will be an ideal response?

If a country like Germany had a current account surplus, it would sell its currency in the foreign exchange market in order to keep it from appreciating. The German central banks would thus find themselves swamped with official reserves, and Germany would face the problem of having its money supply grow uncontrollably, a trend that would most likely drive up the domestic price levels and upset internal balance. Revaluation of the currency would thus be a viable solution to this problem.