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The mid-point of the line segment joinin...

The mid-point of the line segment joining (2a, 4) and (-2, 3b) is `(1, 2a pm 1)`. The values of a and b are

A

`a = 2, b = 3`

B

`a = 1, b = 3`

C

`a = 2, b = 2`

D

`a = 1, b= 1`

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