The critical micelle concentration (CMC) of a soap solution is $5 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$. Identify the correct statements about this solution. I. The micelle is stable if the soap solution concentration is $10^{-7} \mathrm{~mol} \mathrm{~L}^{-1}$ II. The micelle is stable if the soap solution concentration is higher than $5 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$ III. Micelles are also known as associated colloids.

• A

  I, II, III
• B

  I, II only
• C

  I, III only
• Correct answer
  D

  II, III only

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