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If `alpha,beta` are the roots of the equation `x^2-2p(x-4)-15=0` then the set of values of p for which one root is less than 1 and the other root is greater than 2 is

A

`(7//3, oo)`

B

`(-oo,7//3)`

C

`x epsilon R`

D

None of these

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The correct Answer is:
B
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