A stone is dropped from a balloon rising with acceleration \( a \). The acceleration of the ston...

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A stone is dropped from a balloon rising with acceleration
\( a \). The acceleration of the stone relative to the balloon is :
(A) \( g \) downward
(B) \( g+a \) downward
(C) \( g \)-a upward
(D) \( g+a \) upward
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