For every integer n > 2 the sum of the expansions \(1 - {}^n{C_1} + { – McqOptions

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1.	For every integer n > 2 the sum of the expansions \(1 - {}^n{C_1} + {}^n{C_2} + - - - {( - 1)^n}{}.^n{C_n}\) is______
A.	n(n - 1)2n - 2
B.	0
C.	n 2m - 1
D.	\((2n_{c_n})^2\)
Answer» C. n 2m - 1

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