The upper stratosphere consisting of the ozone layer, protects us from the sun's radiation that falls in the wavelength region of

• Correct answer
  A

  $200-315\mathrm{nm}$
• B

  $600-750\mathrm{ }\mathrm{nm}$
• C

  $400-550\mathrm{nm}$
• D

  $0.8-1.5\mathrm{nm}$

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