Do Variables inside unnamed namespace have Internal Linkage ?

I have below code snippet.

--- CODE START ------

#include<iostream>

namespace {

int p;

}

static int i;

template<const int& T> struct Sample { };

using namespace std;

int main(int argc,char* argv[]) {

Sample<p> o1; // works although internal linkage as per c++ reference.

Sample<i> o2; // error because static variable has internal linkage and
Template argument initialization requires external linkage.

}

--- CODE END ------

ibm c++ reference says that unnamed namespace variables have internal
linkage hence better to use than static variables. - (A)
http://publib.boulder.ibm.com/infocenter/comphelp/v8v101/index.jsp?topic=%2F
com.ibm.xlcpp8a.doc%2Flanguage%2Fref%2Funnamed_namespaces.htm

also i verified via g++ as well as Microsoft compiler that "template
arguments cannot be names with internal linkage" - (B)
( also verified via below link )
http://www.comeaucomputing.com/techtalk/#nostatic

so if above code does not work Which of above statements is incorrect (A) or
(B) ?

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