The Henry's law constant ($K_H$) values for four gases $W, X, Y,$ and $Z$ in water at $298\text{ K}$ are $4.0 \times 10^4$, $2.5 \times 10^{-2}$, $1.5 \times 10^3$, and $8.0 \times 10^1\text{ bar}$, respectively. What is the correct order of their solubility in water under the same partial pressure?