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Pick the wrong answer in the context wit...

Pick the wrong answer in the context with rainbow.

A

An observer can see a rainbow when his front is towards the sun.

B

Rainbow is a combined effect of dispersion, refraction and reflection of sunlight.

C

When the light rays undergo two internal reflections in a water drop, a secondary rainbow is formed.

D

The order of colours is reveresed in the secondary rainbow.

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