If $$m = \sqrt {5 + \sqrt {5 + \sqrt {5.....} } } $$and $$n = \sqrt {5 - \sqrt {5 - \sqrt {5.....} } } $$then among the following the relation between m & n holds is?

• A. - n + 1 = 0
• B. + n + 1 = 0
• C. + n - 1 = 0
• D. - n - 1 = 0