If n and r are integers such that 1 ≤ r ≤ n, then the value of – McqOptions

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1.	If n and r are integers such that 1 ≤ r ≤ n, then the value of \(n(^{n-1}C_{r-1})\) is
A.	\(^nC_r\)
B.	\(r(^nC_r)\)
C.	\(n(^nC_r)\)
D.	\((n-1)(^nC_r)\)
Answer» C. \(n(^nC_r)\)

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