MatrixConditionNumber for 2-norm unexpected error

Question

From documentation it has been specified that we can use 1,2 or ∞ as the second parameter of LinearAlgebra`MatrixConditionNumber command, but when I use 2 as p, Mathematica outputs the following error:

LinearAlgebra`MatrixConditionNumber::nrmp: 
The value 2 of the option Norm is incorrect. It should be 1 or Infinity.

I use Mathematica v9.0 and this is my code:

n = 10; (* n= 20 *)
A = Table[0, {n + 1}, {n + 1}];
x = Sort[RandomReal[1, n + 1, WorkingPrecision -> 4]];
For[i = 0, i <= n, i++,
  For[j = 0, j <= n, j++,
    A[[i + 1, j + 1]] = x[[i + 1]]^j;
    ];
  ];
LinearAlgebra`MatrixConditionNumber[A , Norm -> 2]