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Two identical balls A and B are released...

Two identical balls `A` and `B` are released from the position shown in Fig. They collide elastically with each other on the horizontal portion. The ratio of heights attained by `A` and `B` after collision is (neglect friction)

A

`1 :4`

B

`2 : 1`

C

`4 : 13`

D

`2 : 5`

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