Identify the correct chronological order according to their dates of celebration in a year :

A World Cancer Day, World Environment Day, World Blood Donor Day, International Day of Elders

B World Environment Day, World Cancer Day, World Blood Donor Day, International Day of Elders

C World Blood Donor Day, World Cancer Day, World Environment Day, International Day of Elders

D International Day of Elders, World Cancer Day, World Environment Day and World Blood Donor Day

Answer & Explanation
Answer:World Cancer Day, World Environment Day, World Blood Donor Day, International Day of Elders

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