Pick out the wrong statement ?

A. characterised by a steady decrease in temperature is called stratosphere</strong>

B. Troposphere is a turbulent dusty zone containing much of water vapor and clouds

C. The earths atmosphere is an envelope of gases extending upto a height of about 200 kms

D. Stratosphere is rich in ozone and is located just above the troposphere

E. The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere
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