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Let there is an A.P. with common differe...

Let there is an A.P. with common difference 4 such that the squares of the first term plus the sum of all other terms is at most 100. If the number of terms is maximum then the range of 'a' is

A

`[-4,-3]`

B

`[(-7)/(2),-(5)/(2)]`

C

`[-3,-2]`

D

none of these

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The correct Answer is:
A
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