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Consider an infinite geometric series wi...

Consider an infinite geometric series with first term a and common ratio r. if the sum is 4 and the sencond term is 3/4 ,then

A

`(4//7, 3//7)`

B

`(2, 3//8)`

C

`(3//2, 1//2)`

D

`(3,1//4)`

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D
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