Jolene hung three identical handkerchiefs, A, B and C, containing the same amount of water to dry in the sun. Each handkerchief was folded to expose a different amount of surface area. The three handkerchiefs were weighed after half an hour. Joelene plotted her results on a graph shown below.

Which one of the following gives the correct labels for X and Y of the graph plotted by Jolene?

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