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The equation \( 1 + \frac { x } { 1 ! } + \frac { x ^ { 2 } } { 2 ! } + \frac { x ^ { 3 } } { 3 ! } + \frac { x ^ { 4 } } { 4 ! } + \) (A) cannot have a repeated root (C) does not have real root for any \( \mathrm { n } \in \mathrm { N } \) \( \frac { x ^ { n } } { n ! } = 0 , ( n \in N \) (B) can have repeated roots for somen e \( N \) (D) has exactly one pair of repeated root

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