Which of the following is most soluble in water?

• A

  $\mathrm{C}\mathrm{s}\mathrm{C}\mathrm{l}{\mathrm{O}}_4$
• B

  $\mathrm{N}\mathrm{a}\mathrm{C}\mathrm{l}{\mathrm{O}}_4$
• C

  $\mathrm{K}\mathrm{C}\mathrm{l}{\mathrm{O}}_4$
• Correct answer
  D

  $\mathrm{L}\mathrm{i}\mathrm{C}\mathrm{l}{\mathrm{O}}_4$

Hence, the correct answer is option: 'D'.