A student analyzes a sodium sulfate hydrate. The following data is collected: Mass of empty crucible: 20.6542 g, Mass of crucible and hydrate: 20.7454 g, Mass of crucible after heating: 20.6944 g. The mass of water in the hydrate is:
A. 0.0912 g
B. 0.0914 g
C. 0.0916 g
D. 0.0918 g