The equilibrium constant for a reaction `A+B hArr C+D` is `1xx10^(-2)` at `298 K` and is `2` at `273 K`. The chemical process resulting in the formation of `C` and `D` is
A. Exothermic
B. Endothermic
C. Unpredictable
D. There is no relationship between `DeltaH` and `K`.