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If the fourth term in the expansion of (...

If the fourth term in the expansion of `(x/p + 1/x)^n , n epsilon N` is `5/2` and the normal to the parabola `y^2 = 4ax`, at `(at^2, 2at)` meets the parabola again at `(aT^2, 2aT)`, then (A) `T^2 = p+n` (B) `T^2 gt p+n` (C) `T^2 ge p+n` (D) `T^2 le p + n`

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