Which item (a, b or c) in each of the three groups below has the lowest entropy?
I. (a) 10 g ice (b) 10 g water vapor (c) 10 g liquid water
II. (a) 1 mole NaCl solid (b) 1 mol NaCl in 1 M aqueous solution (c) 1 mol molten NaCl
III. (a) 1 mole C$_2$H$_6$(g). (b) 1 mole CH$_4$(g). (c) 1 mol C$_3$H$_8$(g) all at 25 °C and 1 atm
O a, a, c
O a, b, c
O a, a, b
O b, b, c
O c, b, c
