Which of the following (with specific heat capacity provided) would require the least energy to increase temperature by 1 oC?

1.0 g O2(g) (Cs = 0.918 J/g oC)

1.0 g H2O(g) (Cs = 1.864 J/g oC)

1.0 g Si(s) (Cs = 0.712 J/g oC)

1.0 g Al(s) (Cs = 0.897 J/g oC)

1.0 g Pb(s) (Cs = 0.130 J/g oC)