UV കിരണങ്ങളിൽ ഏറ്റവും അപകടകാരിയും ഓസോൺപാളി പൂർണ്ണമായും ആഗിരണം ചെയ്യുന്നതുമായ UV കിരണം ഏത്?
Aഅൾട്രാവയലെറ്റ് A
Bഅൾട്രാവയലെറ്റ് B
Cഅൾട്രാവയലെറ്റ് C
Dഅൾട്രാവയലെറ്റ് D
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