The foreign exchange rate in India has changed from 100 = $1 (US Dollar) to 80 = $1 (US Dollar). What does this change in the exchange rate signify? a) The value of the Indian Rupee () has appreciated relative to the US Dollar ($). b) The value of the Indian Rupee () has depreciated relative to the US Dollar ($). c) There has been no change in the relative value of the two currencies. d) The Indian government has increased interest rates