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A helium filled ballon moves upwards whe...

A helium filled ballon moves upwards when released. This is because

A

the weight is acting upwards

B

the buoyant force and weight acts upwards

C

the weight acts downwards, buoyat force acts upwards and these two are equal

D

the weight acts donwards, buoyant force acts upwards and buoyant force is greater than weight.

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