Question: In the following code, the variable indentAmt _ _ _ _ _ at each recursive call. int sum ( int n , string indentAmt )

In the following code, the variable indentAmt _____ at each recursive call.
int sum(int n, string indentAmt){
int result =0;
if (n ==0){
cout << indentAmt << "your value is: "<< n << endl;
return 0;
}
else {
cout << indentAmt << "your value is: "<< n << endl;
result = n + sum(n -1, indentAmt +"");
}
cout << indentAmt << "Returning pos ="<< n << endl;
return result;
}

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