Given below are two statements ($S-I$ and $S-II$):
$S-I$: Scattering of light by dispersed particles of a colloidal system is known as the Tyndall effect.
$S-II$: The diameter of the dispersed particles should not be much smaller than the wavelength of the light used.
Choose the most appropriate answer from the options given below.

• A
  Both $S-I$ and $S-II$ are correct
• B
  $S-I$ is correct but $S-II$ is incorrect
• C
  Both $S-I$ and $S-II$ are incorrect
• D
  $S-I$ is incorrect but $S-II$ is correct