Upon arrival in Mexico, Sandy exchanged $$1,000$ of U$.$S$.$ currency into $4,80,000$ Mexican Pesos. While returning after her two month visit, she exchanged her remaining $50,000$ Pesos into $$100$ of U$.$S$.$ currency. What amount of gain or a loss did Sandy experience on the $50,000$ pesos she held during her visit and converted to U$.$S$.$ dollars at the departure date? a$.$ Loss of $$4.$O b$.$ No gain or lossO c$.$ Gain of $$4.$O d$.$ Loss of $$6.$