Suppose that Sims $(the$ sim$-$citizens $of$ Simlandia$)$ often visit Secondlifeistan for a virtual holiday. Secondlifeistan uses a currency called the Linden, while Simlandia uses a currency called the Simoleon. The market for foreign currency $is$ depicted $in$ the graphic below, with three demand curves for Lindens:

Answers are $in$ bold. Just want $to$ understand why those are the correct answers. Thanks